def respond_to?(method, include_private = false)
      super || model.respond_to?(method) || relationships.named?(method)
    end
def respond_to?(method, include_private = false)
      super || model.respond_to?(method) || relationships.named?(method)
    end
Check to see if collection can respond to the method

 @param [Symbol] method
   method to check in the object
 @param [Boolean] include_private
   if set to true, collection will check private methods

 @return [Boolean]
   true if method can be responded to

 @api public