code: public AbstractBuilder getAnnotationTypeOptionalMemberBuilder(
              AnnotationTypeWriter annotationTypeWriter)
      throws Exception {
          return AnnotationTypeOptionalMemberBuilder.getInstance(context,
              annotationTypeWriter.getAnnotationTypeDoc(),
              writerFactory.getAnnotationTypeOptionalMemberWriter(
                  annotationTypeWriter));
      }
docs: Return an instance of the annotation type member builder for the given
  class.
  
  @return an instance of the annotation type member builder for the given
  annotation type.