ForkNetwork / guzzle3

        $validator = $this->getValidator();

        foreach ($this->operation->getParams() as $name => $schema) {

            $value = $this[$name];

            if (!$validator->validate($schema, $value)) {

                $errors = array_merge($errors, $validator->getErrors());

            } elseif ($value !== $this[$name]) {

                // Update the config value if it changed and no validation errors were encountered

                $this->data[$name] = $value;

            }

        }

        // Validate additional parameters

                if (!$this->operation->hasParam($name) && !in_array($name, $hidden)) {

                    // Always set the name so that error messages are useful

                    $properties->setName($name);

                    if (!$validator->validate($properties, $value)) {

                        $errors = array_merge($errors, $validator->getErrors());

                    } elseif ($value !== $this[$name]) {

                        $this->data[$name] = $value;

                    }

                }

            }

        }