@classmethod
def fget(cls, obj, *default):
    """
        Returns the value contained in the function dictionary.

        Parameters
        ----------
        obj : function
            The function to acquire the value for.
        default
            The default value to return if the function is not found.
        """
    odict = cls.FUNC_DICT
    obj = '{}.{}'.format(obj.__module__, obj.__name__)
    if obj in odict:
        return odict[obj]
    elif default:
        return default[0]
    else:
        raise KeyError('Key {!r} does not exist.'.format(obj))
