[fixes #2046] you can now suppress the builder() method, useful if you only want toBuilder(). Also suppresses the warnings about any missing Builder.Default annotations.

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

@@ -0,0 +1,27 @@
+import lombok.Builder;
+@Builder(toBuilder = true,builderMethodName = "") class BuilderWithNoBuilderMethod {
+  public static @java.lang.SuppressWarnings("all") class BuilderWithNoBuilderMethodBuilder {
+    private @java.lang.SuppressWarnings("all") String a;
+    @java.lang.SuppressWarnings("all") BuilderWithNoBuilderMethodBuilder() {
+      super();
+    }
+    public @java.lang.SuppressWarnings("all") BuilderWithNoBuilderMethodBuilder a(final String a) {
+      this.a = a;
+      return this;
+    }
+    public @java.lang.SuppressWarnings("all") BuilderWithNoBuilderMethod build() {
+      return new BuilderWithNoBuilderMethod(a);
+    }
+    public @java.lang.Override @java.lang.SuppressWarnings("all") java.lang.String toString() {
+      return (("BuilderWithNoBuilderMethod.BuilderWithNoBuilderMethodBuilder(a=" + this.a) + ")");
+    }
+  }
+  private String a = "";
+  @java.lang.SuppressWarnings("all") BuilderWithNoBuilderMethod(final String a) {
+    super();
+    this.a = a;
+  }
+  public @java.lang.SuppressWarnings("all") BuilderWithNoBuilderMethodBuilder toBuilder() {
+    return new BuilderWithNoBuilderMethodBuilder().a(this.a);
+  }
+}