[i623] added eclipse code for generating @javax.annotation.Generated, and refactored java impl to reduce DRY violations. -f pretty now includes skipping generation of this annotation, and updated ALL the test cases.

test/transform/resource/after-delombok/ToStringPlain.java

@@ -3,6 +3,7 @@ class ToString1 {
 	String name;
 	@java.lang.Override
 	@java.lang.SuppressWarnings("all")
+	@javax.annotation.Generated("lombok")
 	public java.lang.String toString() {
 		return "ToString1(x=" + this.x + ", name=" + this.name + ")";
 	}
@@ -12,6 +13,7 @@ class ToString2 {
 	String name;
 	@java.lang.Override
 	@java.lang.SuppressWarnings("all")
+	@javax.annotation.Generated("lombok")
 	public java.lang.String toString() {
 		return "ToString2(x=" + this.x + ", name=" + this.name + ")";
 	}