@classmethod
def find_by(cls, name, value, columns=None):
    """
        Find a model by specificd column.

        :param name: specificd column name
        :type name: str

        :param value: column value
        :type value: mixed

        :return: Either a Model instance or a Collection
        :rtype: Model
        """
    instance = cls()
    return instance.new_query().find_by(name, value, columns)
