package errhttp import ( "errors" ) var ErrUnprocessableEntity error = UnprocessableEntityWrap(errors.New("Unprocessable Entity")) type UnprocessableEntity interface { ClientError UnprocessableEntity() } type internalUnprocessableEntity struct { err error } func UnprocessableEntityWrap(err error) error { return internalUnprocessableEntity{ err:err, } } func (receiver internalUnprocessableEntity) Error() string { return receiver.err.Error() } func (receiver internalUnprocessableEntity) Err() error { return receiver.err } func (internalUnprocessableEntity) ClientError() { // Nothing here. } func (internalUnprocessableEntity) UnprocessableEntity() { // Nothing here. } func (receiver internalUnprocessableEntity) Unwrap() error { return receiver.err }