setter prefixes for SuperBuilder

setter prefixes for SuperBuilder [javac]
better javadoc for the SuperBuilder setterPrefix value
setter prefixes for SuperBuilder [ecj]
add test for SuperBuilder setter method customization
fix setter method customization with setterPrefix

test/transform/resource/after-ecj/SuperBuilderCustomizedWithSetterPrefix.java

@@ -0,0 +1,45 @@
+import java.util.List;
+public class SuperBuilderCustomizedWithSetterPrefix {
+  public static @lombok.experimental.SuperBuilder(setterPrefix = "set") class Parent {
+    public static abstract class ParentBuilder<C extends Parent, B extends ParentBuilder<C, B>> {
+      private @java.lang.SuppressWarnings("all") int field1;
+      public ParentBuilder() {
+        super();
+      }
+      public B setField1(int field1) {
+        this.field1 = (field1 + 1);
+        return self();
+      }
+      protected abstract @java.lang.SuppressWarnings("all") B self();
+      public abstract @java.lang.SuppressWarnings("all") C build();
+      public @java.lang.Override @java.lang.SuppressWarnings("all") java.lang.String toString() {
+        return (("SuperBuilderCustomizedWithSetterPrefix.Parent.ParentBuilder(field1=" + this.field1) + ")");
+      }
+    }
+    private static final @java.lang.SuppressWarnings("all") class ParentBuilderImpl extends SuperBuilderCustomizedWithSetterPrefix.Parent.ParentBuilder<SuperBuilderCustomizedWithSetterPrefix.Parent, SuperBuilderCustomizedWithSetterPrefix.Parent.ParentBuilderImpl> {
+      private ParentBuilderImpl() {
+        super();
+      }
+      protected @java.lang.Override @java.lang.SuppressWarnings("all") SuperBuilderCustomizedWithSetterPrefix.Parent.ParentBuilderImpl self() {
+        return this;
+      }
+      public @java.lang.Override @java.lang.SuppressWarnings("all") SuperBuilderCustomizedWithSetterPrefix.Parent build() {
+        return new SuperBuilderCustomizedWithSetterPrefix.Parent(this);
+      }
+    }
+    int field1;
+    protected @java.lang.SuppressWarnings("all") Parent(final SuperBuilderCustomizedWithSetterPrefix.Parent.ParentBuilder<?, ?> b) {
+      super();
+      this.field1 = b.field1;
+    }
+    public static @java.lang.SuppressWarnings("all") SuperBuilderCustomizedWithSetterPrefix.Parent.ParentBuilder<?, ?> builder() {
+      return new SuperBuilderCustomizedWithSetterPrefix.Parent.ParentBuilderImpl();
+    }
+  }
+  public SuperBuilderCustomizedWithSetterPrefix() {
+    super();
+  }
+  public static void test() {
+    Parent x = Parent.builder().setField1(5).build();
+  }
+}