code: public static <T> boolean hasDeclaredGetterAndSetter(final Field field, Class<T> entityClazz) {
  		boolean hasDeclaredAccessorsMutators = true;
  
  		Method getter = retrieveGetterFrom(entityClazz, field.getName());
  		Method setter = retrieveSetterFrom(entityClazz, field.getName());
  
  		if(getter == null || setter == null) {
  			hasDeclaredAccessorsMutators = false;
  		}
  
  		return hasDeclaredAccessorsMutators;
  	}
docs: This method checks if the declared Field is accessible through getters and setters methods Fields which have only
  setters OR getters and NOT both are discarded from serialization process