code: def attribute_by_name(self, name):
          
          att = self.__attribute_by_name(javabridge.get_env().new_string(name))
          if att is None:
              return None
          else:
              return Attribute(att)
docs: Returns the specified attribute, None if not found.
  
          :param name: the name of the attribute
          :type name: str
          :return: the attribute or None
          :rtype: Attribute