Add header documentation for classes & traits that can be used in app…

…lications

src/Collection.php

@@ -6,6 +6,9 @@
 use MongoDB\BSON\ObjectID;
 use MongoDB\Collection as MongoCollection;
 
+/**
+ * @mixin MongoCollection
+ */
 class Collection
 {
  /**

src/Connection.php

@@ -12,6 +12,9 @@
 use MongoDB\Database;
 use Throwable;
 
+/**
+ * @mixin Database
+ */
 class Connection extends BaseConnection
 {
  use ManagesTransactions;

src/Eloquent/EmbedsRelations.php

@@ -6,6 +6,9 @@
 use Jenssegers\Mongodb\Relations\EmbedsMany;
 use Jenssegers\Mongodb\Relations\EmbedsOne;
 
+/**
+ * Embeds relations for MongoDB models.
+ */
 trait EmbedsRelations
 {
  /**

src/Eloquent/HybridRelations.php

@@ -12,6 +12,10 @@
 use Jenssegers\Mongodb\Relations\MorphMany;
 use Jenssegers\Mongodb\Relations\MorphTo;
 
+/**
+ * Cross-database relationships between SQL and MongoDB.
+ * Use this trait in SQL models to define relationships with MongoDB models.
+ */
 trait HybridRelations
 {
  /**