Add optional prefixes to Builder setter method names

.gitignore

@@ -15,10 +15,11 @@
 /.factorypath
 /lombok.iml
 /.idea
+*.iml
 *.markdown.html
 /junit*.properties
 /eclipse.location
 /.apt_generated/
 /out
 /website/lombokSupporters
-/pom.xml
+/pom.xml

AUTHORS

@@ -2,6 +2,7 @@ Lombok contributors in alphabetical order:
 
 Adam Juraszek <juriad@gmail.com>
 Bulgakov Alexander <buls@yandex.ru>
+Caleb Brinkman <floralvikings@gmail.com>
 Christian Nüssgens <christian@nuessgens.com>
 Christian Sterzl <christian.sterzl@gmail.com>
 DaveLaw <project.lombok@apconsult.de>

src/core/lombok/Builder.java

@@ -153,6 +153,19 @@
 	 * @return The builder class will be generated with this access modifier.
 	 */
 	AccessLevel access() default lombok.AccessLevel.PUBLIC;
+
+	/**
+	 * Prefix to prepend to set methods in the generated builder class.  By default, generated methods to not include a
+	 * prefix.  If this value populated, the first letter of the generated method name will be capitalized.
+	 *
+	 * For example, a method normally generated as {@code someField(String someField)} would instead be generated as {@code withSomeField(String someField)}
+	 *
+	 * Note that using "with" to prefix builder setter methods is strongly discouraged as as "with" normally
+	 * suggests immutable data structures, and builders by definition are mutable objects.
+	 *
+	 * @return The prefix to prepend to generated method names.
+	 */
+	String setterPrefix() default "";
 
 	/**
 	 * Put on a field (in case of {@code @Builder} on a type) or a parameter (for {@code @Builder} on a constructor or static method) to

src/core/lombok/eclipse/handlers/EclipseSingularsRecipes.java

@@ -120,6 +120,7 @@ public static final class SingularData {
 		private final EclipseNode annotation;
 		private final char[] singularName;
 		private final char[] pluralName;
+		private final char[] setterPrefix;
 		private final List<TypeReference> typeArgs;
 		private final String targetFqn;
 		private final EclipseSingularizer singularizer;
@@ -133,8 +134,20 @@ public SingularData(EclipseNode annotation, char[] singularName, char[] pluralNa
 			this.targetFqn = targetFqn;
 			this.singularizer = singularizer;
 			this.source = source;
+			this.setterPrefix = new char[0];
 		}
-
+
+		public SingularData(EclipseNode annotation, char[] singularName, char[] pluralName, List<TypeReference> typeArgs, String targetFqn, EclipseSingularizer singularizer, ASTNode source, char[] setterPrefix) {
+			this.annotation = annotation;
+			this.singularName = singularName;
+			this.pluralName = pluralName;
+			this.typeArgs = typeArgs;
+			this.targetFqn = targetFqn;
+			this.singularizer = singularizer;
+			this.source = source;
+			this.setterPrefix = setterPrefix;
+		}
+
 		public void setGeneratedByRecursive(ASTNode target) {
 			SetGeneratedByVisitor visitor = new SetGeneratedByVisitor(source);
 
@@ -162,7 +175,11 @@ public char[] getSingularName() {
 		public char[] getPluralName() {
 			return pluralName;
 		}
-
+
+		public char[] getSetterPrefix() {
+			return setterPrefix;
+		}
+
 		public List<TypeReference> getTypeArgs() {
 			return typeArgs;
 		}