atk4 / atk4

        ) {

            throw $this->exception('Hook does not exist');

        }

        if (is_object($callable) && !is_callable($callable)) {

            $callable = array($callable, $hook_spot);

            // short for addHook('test', $this); to call $this->test();

        }

        $this->hooks[$hook_spot][$priority][] = array($callable, $arguments);

            return $this;

        }

        if (is_object($callable) && !is_callable($callable)) {

            $callable = array($callable, $name);

        }

        if ($this->hasMethod($name)) {

            throw $this->exception('Registering method twice');

        }