diff --git a/modules/account/src/frontend/migrations/m150302_154115_account_user.php b/modules/account/src/frontend/migrations/m150302_154115_account_user.php
index 93982daa3..93ac32983 100644
--- a/modules/account/src/frontend/migrations/m150302_154115_account_user.php
+++ b/modules/account/src/frontend/migrations/m150302_154115_account_user.php
@@ -16,6 +16,17 @@ public function safeUp()
             'password_salt' => $this->string(255),
             'auth_token' => $this->string(255),
             'is_deleted' => $this->integer(11)->defaultValue(0),
+            'gender' => $this->smallInteger(1)->defaultValue(0),
+            'street' => $this->string(120),
+            'zip' => $this->string(20),
+            'city' => $this->string(80),
+            'country' => $this->string(80),
+            'company' => $this->string(80),
+            'subscription_newsletter' => $this->boolean()->defaultValue(0),
+            'subscription_medianews' => $this->boolean()->defaultValue(0),
+            'verification_hash' => $this->string(80),
+            'is_mail_verified' => $this->boolean()->defaultValue(0),
+            'is_active' => $this->boolean()->defaultValue(0),
         ]);
     }
 
diff --git a/modules/account/src/frontend/migrations/m151214_095728_add_more_user_data.php b/modules/account/src/frontend/migrations/m151214_095728_add_more_user_data.php
deleted file mode 100644
index 86fc66d76..000000000
--- a/modules/account/src/frontend/migrations/m151214_095728_add_more_user_data.php
+++ /dev/null
@@ -1,37 +0,0 @@
-<?php
-
-use yii\db\Schema;
-use yii\db\Migration;
-
-class m151214_095728_add_more_user_data extends Migration
-{
-    public function safeUp()
-    {
-        $this->addColumn('account_user', 'gender', $this->smallInteger(1)->defaultValue(0)); // 0 = Mrs; 1 = Mr
-        $this->addColumn('account_user', 'street', $this->string(120));
-        $this->addColumn('account_user', 'zip', $this->string(20));
-        $this->addColumn('account_user', 'city', $this->string(80));
-        $this->addColumn('account_user', 'country',$this->string(80));
-        $this->addColumn('account_user', 'company', $this->string(80));
-        $this->addColumn('account_user', 'subscription_newsletter', $this->boolean()->defaultValue(0));
-        $this->addColumn('account_user', 'subscription_medianews', $this->boolean()->defaultValue(0));
-        $this->addColumn('account_user', 'verification_hash', $this->string(80));
-        $this->addColumn('account_user', 'is_mail_verified', $this->boolean()->defaultValue(0));
-        $this->addColumn('account_user', 'is_active', $this->boolean()->defaultValue(0));
-    }
-
-    public function safeDown()
-    {
-    	$this->dropColumn('account_user', 'gender');
-    	$this->dropColumn('account_user', 'street');
-    	$this->dropColumn('account_user', 'zip');
-    	$this->dropColumn('account_user', 'city');
-    	$this->dropColumn('account_user', 'country');
-    	$this->dropColumn('account_user', 'company');
-    	$this->dropColumn('account_user', 'subscription_newsletter');
-    	$this->dropColumn('account_user', 'subscription_medianews');
-    	$this->dropColumn('account_user', 'verification_hash');
-    	$this->dropColumn('account_user', 'is_mail_verified');
-    	$this->dropColumn('account_user', 'is_active');
-    }
-}
diff --git a/modules/crawler/src/admin/migrations/m150727_104346_crawler_index.php b/modules/crawler/src/admin/migrations/m150727_104346_crawler_index.php
index e05b03aaf..8d1ebcd82 100644
--- a/modules/crawler/src/admin/migrations/m150727_104346_crawler_index.php
+++ b/modules/crawler/src/admin/migrations/m150727_104346_crawler_index.php
@@ -4,37 +4,24 @@
 
 class m150727_104346_crawler_index extends Migration
 {
-    public function up()
+    public function safeUp()
     {
         $this->createTable('crawler_index', [
-            'id' => 'pk',
-            'url' => 'varchar(200) NOT NULL',
-            'content' => 'TEXT',
-            'title' => 'varchar(200)',
-            'added_to_index' => 'int(11)',
-            'last_update' => 'int(11)',
-            'arguments_json' => 'text NOT NULL',
-            'language_info' => 'varchar(80)',
+            'id' => $this->primaryKey(),
+            'url' => $this->string(200)->notNull()->unique(),
+            'title' => $this->string(200),
+            'content' => $this->text(),
+            'description' => $this->text(),
+            'language_info' => $this->string(80),
+            'url_found_on_page' => $this->string(255),
+            'group' => $this->string(120),
+            'added_to_index' => $this->integer(11)->defaultValue(0),
+            'last_update' => $this->integer(11)->defaultValue(0),
         ]);
-
-        $this->createIndex('uniqueurl', 'crawler_index', 'url', true);
-    }
-
-    public function down()
-    {
-        echo "m150727_104346_crawler_index cannot be reverted.\n";
-
-        return false;
-    }
-
-    /*
-    // Use safeUp/safeDown to run migration code within a transaction
-    public function safeUp()
-    {
     }
 
     public function safeDown()
     {
+        $this->dropTable('crawler_index');
     }
-    */
 }
diff --git a/modules/crawler/src/admin/migrations/m150727_105126_crawler_builder_index.php b/modules/crawler/src/admin/migrations/m150727_105126_crawler_builder_index.php
index 1fed5a0f0..63f97961f 100644
--- a/modules/crawler/src/admin/migrations/m150727_105126_crawler_builder_index.php
+++ b/modules/crawler/src/admin/migrations/m150727_105126_crawler_builder_index.php
@@ -4,38 +4,27 @@
 
 class m150727_105126_crawler_builder_index extends Migration
 {
-    public function up()
+    public function safeUp()
     {
         $this->createTable('crawler_builder_index', [
-            'id' => 'pk',
-            'url' => 'varchar(200) NOT NULL',
-            'content' => 'TEXT',
-            'title' => 'varchar(200)',
-            'last_indexed' => 'int(11)',
-            'arguments_json' => 'text NOT NULL', // removed in beta3
-            'language_info' => 'varchar(80)',
-            'crawled' => 'tinyint(1) default 0',
-            'status_code' => 'tinyint(4) default 0',
+            'id' => $this->primaryKey(),
+            'url' => $this->string(200)->notNull()->unique(),
+            'title' => $this->string(200),
+            'content' => $this->text(),
+            'description' => $this->text(),
+            'language_info' => $this->string(80),
+            'url_found_on_page' => $this->string(255),
+            'group' => $this->string(120),
+            'last_indexed' => $this->integer(11),
+            'crawled' => $this->boolean()->defaultValue(0),
+            'status_code' => $this->smallInteger(4)->defaultValue(0),
+            'content_hash' => $this->string(80),
+            'is_dublication' => $this->boolean()->defaultValue(0),
         ]);
-
-        $this->createIndex('uniqueurl', 'crawler_builder_index', 'url', true);
-    }
-
-    public function down()
-    {
-        echo "m150727_105126_crawler_builder_index cannot be reverted.\n";
-
-        return false;
-    }
-
-    /*
-    // Use safeUp/safeDown to run migration code within a transaction
-    public function safeUp()
-    {
     }
 
     public function safeDown()
     {
+        $this->dropTable('crawler_builder_index');
     }
-    */
 }
diff --git a/modules/crawler/src/admin/migrations/m151213_201944_add_md5_sum.php b/modules/crawler/src/admin/migrations/m151213_201944_add_md5_sum.php
deleted file mode 100644
index 899b43657..000000000
--- a/modules/crawler/src/admin/migrations/m151213_201944_add_md5_sum.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-use yii\db\Schema;
-use yii\db\Migration;
-
-class m151213_201944_add_md5_sum extends Migration
-{
-    public function up()
-    {
-        $this->addColumn("crawler_builder_index", "content_hash", "varchar(80)");
-        $this->addColumn("crawler_builder_index", "is_dublication", "tinyint(1) default 0");
-        $this->dropColumn("crawler_builder_index", "arguments_json");
-        $this->dropColumn("crawler_index", "arguments_json");
-    }
-
-    public function down()
-    {
-        echo "m151213_201944_add_md5_sum cannot be reverted.\n";
-
-        return false;
-    }
-
-    /*
-    // Use safeUp/safeDown to run migration code within a transaction
-    public function safeUp()
-    {
-    }
-
-    public function safeDown()
-    {
-    }
-    */
-}
diff --git a/modules/crawler/src/admin/migrations/m160420_093031_addreflink.php b/modules/crawler/src/admin/migrations/m160420_093031_addreflink.php
deleted file mode 100644
index 0a134c4a8..000000000
--- a/modules/crawler/src/admin/migrations/m160420_093031_addreflink.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-use yii\db\Migration;
-
-class m160420_093031_addreflink extends Migration
-{
-    
-    // Use safeUp/safeDown to run migration code within a transaction
-    public function safeUp()
-    {
-        $this->addColumn('crawler_index', 'url_found_on_page', 'varchar(255)');
-        $this->addColumn('crawler_builder_index', 'url_found_on_page', 'varchar(255)');
-    }
-
-    public function safeDown()
-    {
-        $this->dropColumn('crawler_index', 'url_found_on_page');
-        $this->dropColumn('crawler_builder_index', 'url_found_on_page');
-    }
-}
diff --git a/modules/crawler/src/admin/migrations/m160524_134433_searchindex.php b/modules/crawler/src/admin/migrations/m160524_134433_searchindex.php
index 6b6615817..212d856df 100644
--- a/modules/crawler/src/admin/migrations/m160524_134433_searchindex.php
+++ b/modules/crawler/src/admin/migrations/m160524_134433_searchindex.php
@@ -4,7 +4,6 @@
 
 class m160524_134433_searchindex extends Migration
 {
-    // Use safeUp/safeDown to run migration code within a transaction
     public function safeUp()
     {
         $this->createTable('crawler_searchdata', [
diff --git a/modules/crawler/src/admin/migrations/m160929_082726_add_section_field.php b/modules/crawler/src/admin/migrations/m160929_082726_add_section_field.php
deleted file mode 100644
index 6b98424aa..000000000
--- a/modules/crawler/src/admin/migrations/m160929_082726_add_section_field.php
+++ /dev/null
@@ -1,19 +0,0 @@
-<?php
-
-use yii\db\Migration;
-
-class m160929_082726_add_section_field extends Migration
-{
-    // Use safeUp/safeDown to run migration code within a transaction
-    public function safeUp()
-    {
-        $this->addColumn('crawler_index', 'group', 'varchar(120)');
-        $this->addColumn('crawler_builder_index', 'group', 'varchar(120)');
-    }
-
-    public function safeDown()
-    {
-        $this->dropColumn('crawler_index', 'group');
-        $this->dropColumn('crawler_builder_index', 'group');
-    }
-}
diff --git a/modules/crawler/src/admin/migrations/m161024_134505_add_description_field.php b/modules/crawler/src/admin/migrations/m161024_134505_add_description_field.php
deleted file mode 100644
index ac6bc9001..000000000
--- a/modules/crawler/src/admin/migrations/m161024_134505_add_description_field.php
+++ /dev/null
@@ -1,19 +0,0 @@
-<?php
-
-use yii\db\Migration;
-
-class m161024_134505_add_description_field extends Migration
-{
-    // Use safeUp/safeDown to run migration code within a transaction
-    public function safeUp()
-    {
-        $this->addColumn('crawler_index', 'description', 'text');
-        $this->addColumn('crawler_builder_index', 'description', 'text');
-    }
-
-    public function safeDown()
-    {
-        $this->dropColumn('crawler_index', 'description');
-        $this->dropColumn('crawler_builder_index', 'description');
-    }
-}
diff --git a/modules/errorapi/src/migrations/m150210_102242_error_data.php b/modules/errorapi/src/migrations/m150210_102242_error_data.php
index 5eaa1f5a7..d9d88015d 100644
--- a/modules/errorapi/src/migrations/m150210_102242_error_data.php
+++ b/modules/errorapi/src/migrations/m150210_102242_error_data.php
@@ -5,20 +5,18 @@
 
 class m150210_102242_error_data extends Migration
 {
-    public function up()
+    public function safeUp()
     {
         $this->createTable('error_data', [
-            'id' => 'pk',
-            'identifier' => Schema::TYPE_STRING,
-            'error_json' => Schema::TYPE_TEXT,
-            'timestamp_create' => Schema::TYPE_INTEGER,
+            'id' => $this->primaryKey(),
+            'identifier' => $this->string(255),
+            'error_json' => $this->text(),
+            'timestamp_create' => $this->integer(11)->defaultValue(0),
         ]);
     }
 
-    public function down()
+    public function safeDown()
     {
-        echo "m150210_102242_error_data cannot be reverted.\n";
-
-        return false;
+        $this->dropTable('error_data');
     }
 }
diff --git a/modules/gallery/src/admin/migrations/m150504_094950_gallery_album.php b/modules/gallery/src/admin/migrations/m150504_094950_gallery_album.php
index 4859b6924..9bace7601 100644
--- a/modules/gallery/src/admin/migrations/m150504_094950_gallery_album.php
+++ b/modules/gallery/src/admin/migrations/m150504_094950_gallery_album.php
@@ -4,34 +4,23 @@
 
 class m150504_094950_gallery_album extends Migration
 {
-    public function up()
+    public function safeUp()
     {
         $this->createTable('gallery_album', [
-            'id' => 'pk',
-            'cat_id' => 'int(11) NOT NULL default 0',
-            'title' => 'varchar(150) NOT NULL',
-            'description' => 'text',
-            'cover_image_id' => 'int(11) default 0',
-            'timestamp_create' => 'int(11) NOT NULL default 0',
-            'timestamp_update' => 'int(11) NOT NULL default 0',
+            'id' => $this->primaryKey(),
+            'cat_id' => $this->integer()->defaultValue(0),
+            'title' => $this->text()->notNull(),
+            'description' => $this->text(),
+            'cover_image_id' => $this->integer(11)->defaultValue(0),
+            'timestamp_create' => $this->integer(0)->defaultValue(0),
+            'timestamp_update' => $this->integer(0)->defaultValue(0),
+            'is_highlight' => $this->boolean()->defaultValue(0),
+            'sort_index' => $this->integer()->defaultValue(0),
         ]);
     }
 
-    public function down()
-    {
-        echo "m150504_094950_gallery_album cannot be reverted.\n";
-
-        return false;
-    }
-
-    /*
-    // Use safeUp/safeDown to run migration code within a transaction
-    public function safeUp()
-    {
-    }
-
     public function safeDown()
     {
+        $this->dropTable('gallery_album');
     }
-    */
 }
diff --git a/modules/gallery/src/admin/migrations/m150504_132138_gallery_album_image.php b/modules/gallery/src/admin/migrations/m150504_132138_gallery_album_image.php
index 6cd1063c5..4ae40f81e 100644
--- a/modules/gallery/src/admin/migrations/m150504_132138_gallery_album_image.php
+++ b/modules/gallery/src/admin/migrations/m150504_132138_gallery_album_image.php
@@ -4,29 +4,16 @@
 
 class m150504_132138_gallery_album_image extends Migration
 {
-    public function up()
+    public function safeUp()
     {
         $this->createTable('gallery_album_image', [
-            'image_id' => 'int(11) NOT NULL default 0',
-            'album_id' => 'int(11) NOT NULL default 0',
+            'image_id' => $this->integer(11)->notNull(),
+            'album_id' => $this->integer(11)->notNull(),
         ]);
     }
 
-    public function down()
-    {
-        echo "m150504_132138_gallery_album_image cannot be reverted.\n";
-
-        return false;
-    }
-
-    /*
-    // Use safeUp/safeDown to run migration code within a transaction
-    public function safeUp()
-    {
-    }
-
     public function safeDown()
     {
+        $this->dropTable('gallery_album_image');
     }
-    */
 }
diff --git a/modules/gallery/src/admin/migrations/m150601_105400_gallery_cat.php b/modules/gallery/src/admin/migrations/m150601_105400_gallery_cat.php
index c97ac14da..466dd461a 100644
--- a/modules/gallery/src/admin/migrations/m150601_105400_gallery_cat.php
+++ b/modules/gallery/src/admin/migrations/m150601_105400_gallery_cat.php
@@ -4,31 +4,18 @@
 
 class m150601_105400_gallery_cat extends Migration
 {
-    public function up()
+    public function safeUp()
     {
         $this->createTable('gallery_cat', [
-            'id' => 'pk',
-            'title' => 'VARCHAR(120) NOT NULL',
-            'cover_image_id' => 'int(11) NOT NULL default 0',
-            'description' => 'text',
+            'id' => $this->primaryKey(),
+            'title' => $this->text()->notNull(),
+            'cover_image_id' => $this->integer(11)->defaultValue(0),
+            'description' => $this->text(),
         ]);
     }
 
-    public function down()
-    {
-        echo "m150601_105400_gallery_cat cannot be reverted.\n";
-
-        return false;
-    }
-
-    /*
-    // Use safeUp/safeDown to run migration code within a transaction
-    public function safeUp()
-    {
-    }
-
     public function safeDown()
     {
+        $this->dropTable('gallery_cat');
     }
-    */
 }
diff --git a/modules/gallery/src/admin/migrations/m160603_080705_album_add_sortindex_highlight.php b/modules/gallery/src/admin/migrations/m160603_080705_album_add_sortindex_highlight.php
deleted file mode 100644
index 027c1a76c..000000000
--- a/modules/gallery/src/admin/migrations/m160603_080705_album_add_sortindex_highlight.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-use yii\db\Migration;
-
-class m160603_080705_album_add_sortindex_highlight extends Migration
-{
-    public function safeUp()
-    {
-        $this->addColumn('gallery_album', 'is_highlight', 'tinyint(1) NOT NULL default 0');
-        $this->addColumn('gallery_album', 'sort_index', 'int(11) NOT NULL DEFAULT 0');
-    }
-
-    public function safeDown()
-    {
-        $this->dropColumn('gallery_album', 'is_highlight');
-        $this->dropColumn('gallery_album', 'sort_index');
-    }
-}
diff --git a/modules/news/src/admin/migrations/m150204_144806_news_article.php b/modules/news/src/admin/migrations/m150204_144806_news_article.php
index 47963f983..7ecdebe5a 100644
--- a/modules/news/src/admin/migrations/m150204_144806_news_article.php
+++ b/modules/news/src/admin/migrations/m150204_144806_news_article.php
@@ -1,35 +1,32 @@
 <?php
 
-use yii\db\Schema;
 use yii\db\Migration;
 
 class m150204_144806_news_article extends Migration
 {
-    public function up()
+    public function safeUp()
     {
         $this->createTable('news_article', [
-            'id' => 'pk',
-            'title' => Schema::TYPE_TEXT,
-            'text' => Schema::TYPE_TEXT,
-            'cat_id' => 'int(11) NOT NULL default 0',
-            'image_id' => Schema::TYPE_INTEGER,
-            'image_list' => Schema::TYPE_TEXT,
-            'file_list' => Schema::TYPE_TEXT,
-            'create_user_id' => Schema::TYPE_INTEGER,
-            'update_user_id' => Schema::TYPE_INTEGER,
-            'timestamp_create' => Schema::TYPE_INTEGER,
-            'timestamp_update' => Schema::TYPE_INTEGER,
-            'timestamp_display_from' => Schema::TYPE_INTEGER,
-            'timestamp_display_until' => Schema::TYPE_INTEGER,
-            'is_deleted' => 'tinyint(1) NOT NULL DEFAULT 0',
-            'is_display_limit' => 'tinyint(1) NOT NULL DEFAULT 0',
+            'id' => $this->primaryKey(),
+            'title' => $this->text(),
+            'text' => $this->text(),
+            'cat_id' => $this->integer(11)->defaultValue(0),
+            'image_id' => $this->integer(11)->defaultValue(0),
+            'image_list' => $this->text(),
+            'file_list' => $this->text(),
+            'create_user_id' => $this->integer(11)->defaultValue(0),
+            'update_user_id' => $this->integer(11)->defaultValue(0),
+            'timestamp_create' => $this->integer(11)->defaultValue(0),
+            'timestamp_update' => $this->integer(11)->defaultValue(0),
+            'timestamp_display_from' => $this->integer(11)->defaultValue(0),
+            'timestamp_display_until' => $this->integer(11)->defaultValue(0),
+            'is_deleted' => $this->boolean()->defaultValue(0),
+            'is_display_limit' => $this->boolean()->defaultValue(0),
         ]);
     }
 
-    public function down()
+    public function safeDown()
     {
-        echo "m150204_144806_news_article cannot be reverted.\n";
-
-        return false;
+        $this->dropTable('news_article');
     }
-}
+}
\ No newline at end of file
diff --git a/modules/news/src/admin/migrations/m150428_095829_news_cat.php b/modules/news/src/admin/migrations/m150428_095829_news_cat.php
index e33e98ca5..bad63e95a 100644
--- a/modules/news/src/admin/migrations/m150428_095829_news_cat.php
+++ b/modules/news/src/admin/migrations/m150428_095829_news_cat.php
@@ -7,8 +7,8 @@ class m150428_095829_news_cat extends Migration
     public function safeUp()
     {
         $this->createTable('news_cat', [
-            'id' => 'pk',
-            'title' => 'VARCHAR(150) NOT NULL',
+            'id' => $this->primaryKey(),
+            'title' => $this->string(150)->notNull(),
         ]);
     }
 
diff --git a/modules/news/src/admin/migrations/m161212_084323_add_teaser_field.php b/modules/news/src/admin/migrations/m161212_084323_add_teaser_field.php
index 89b4d0a90..692de6841 100644
--- a/modules/news/src/admin/migrations/m161212_084323_add_teaser_field.php
+++ b/modules/news/src/admin/migrations/m161212_084323_add_teaser_field.php
@@ -4,10 +4,9 @@
 
 class m161212_084323_add_teaser_field extends Migration
 {
-    // Use safeUp/safeDown to run migration code within a transaction
     public function safeUp()
     {
-        $this->addColumn('news_article', 'teaser_text', 'text');
+        $this->addColumn('news_article', 'teaser_text', $this->text());
     }
 
     public function safeDown()
diff --git a/modules/remoteadmin/src/migrations/m150722_125833_remote_site.php b/modules/remoteadmin/src/migrations/m150722_125833_remote_site.php
index b7605b5ba..a903d6751 100755
--- a/modules/remoteadmin/src/migrations/m150722_125833_remote_site.php
+++ b/modules/remoteadmin/src/migrations/m150722_125833_remote_site.php
@@ -1,35 +1,23 @@
 <?php
 
-use yii\db\Schema;
 use yii\db\Migration;
 
 class m150722_125833_remote_site extends Migration
 {
-    public function up()
+    public function safeUp()
     {
         $this->createTable('remote_site', [
-            'id' => 'pk',
-            'token' => 'varchar(120)',
-            'url' => 'varchar(120)',
-            'status' => 'int(11)',
+            'id' => $this->primaryKey(),
+            'token' => $this->string(120)->notNull(),
+            'url' => $this->string(120)->notNull(),
+            'auth_is_enabled' => $this->boolean()->defaultValue(0),
+            'auth_user' => $this->string(120),
+            'auth_pass' => $this->string(120),
         ]);
     }
 
-    public function down()
-    {
-        echo "m150722_125833_remote_site cannot be reverted.\n";
-
-        return false;
-    }
-    
-    /*
-    // Use safeUp/safeDown to run migration code within a transaction
-    public function safeUp()
-    {
-    }
-
     public function safeDown()
     {
+        $this->dropTable('remote_site');
     }
-    */
 }
diff --git a/modules/remoteadmin/src/migrations/m151013_084408_add_http_auth.php b/modules/remoteadmin/src/migrations/m151013_084408_add_http_auth.php
deleted file mode 100644
index dea335c79..000000000
--- a/modules/remoteadmin/src/migrations/m151013_084408_add_http_auth.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-
-use yii\db\Schema;
-use yii\db\Migration;
-
-class m151013_084408_add_http_auth extends Migration
-{
-    public function up()
-    {
-        $this->addColumn('remote_site', 'auth_is_enabled', 'TINYINT(1) DEFAULT 0');
-        $this->addColumn('remote_site', 'auth_user', 'VARCHAR(120)');
-        $this->addColumn('remote_site', 'auth_pass', 'VARCHAR(120)');
-    }
-
-    public function down()
-    {
-        echo "m151013_084408_add_http_auth cannot be reverted.\n";
-
-        return false;
-    }
-
-    /*
-    // Use safeUp/safeDown to run migration code within a transaction
-    public function safeUp()
-    {
-    }
-
-    public function safeDown()
-    {
-    }
-    */
-}