code: public static JMapAccessor getClassAccessors(Class<?> clazz, String fieldName, boolean isOpposite){
  		return getAccessor(clazz, clazz.getAnnotations(),fieldName,isOpposite);
  	}
docs: Checks if this field contains a definition of accessors for the name given as input.
  @param clazz class to check
  @param fieldName name to find
  @param isOpposite true if accessor methods to check belong to the opposite field, false otherwise
  @return JMapAccessor if exists, null otherwise