http://github.com/FasterXML/jackson: General data-binding functionality for Jackson: works on core streaming API (FasterXML)
  • Tatu Saloranta
  • Christopher Currie
  • Paul Brown 
package com.fasterxml.jackson.databind.annotation;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import com.fasterxml.jackson.annotation.JacksonAnnotation;


Marker interface used to indicate implementation classes
(serializers, deserializers etc) that are standard ones Jackson
uses; not custom ones that application has added. It can be
added in cases where certain optimizations can be made if
default instances are uses; for example when handling conversions
of "natural" JSON types like Strings, booleans and numbers.

/**
 * Marker interface used to indicate implementation classes
 * (serializers, deserializers etc) that are standard ones Jackson
 * uses; not custom ones that application has added. It can be
 * added in cases where certain optimizations can be made if
 * default instances are uses; for example when handling conversions
 * of "natural" JSON types like Strings, booleans and numbers.
 */
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@JacksonAnnotation
public @interface JacksonStdImpl {

}