code: @Override
      public boolean isReadable(Class<?> type, Type genericType,
              Annotation[] annotations, MediaType mediaType) {
          return ODataEntity.isODataEntityType(type);
      }
docs: /*
  (non-Javadoc)
  
  @see javax.ws.rs.ext.MessageBodyReader#isReadable(java.lang.Class,
  java.lang.reflect.Type, java.lang.annotation.Annotation[],
  javax.ws.rs.core.MediaType)