src/Pentagonal/Hookable/Hookable.php
public function append($hookName, $callable, $priority = 10, $accepted_args = 1, $create = true)
    {
        if ($create || ! $this->has($hookName, $callable)) {
            return $this->add($hookName, $callable, $priority, $accepted_args);
        }
        return false;
    }
public function append($hookName, $callable, $priority = 10, $accepted_args = 1, $create = true)
    {
        if ($create || ! $this->has($hookName, $callable)) {
            return $this->add($hookName, $callable, $priority, $accepted_args);
        }
        return false;
    }
Appending Hooks Function, if hooks existor just append the hooks

@param  string    $hookName            Hook Name
@param  Callable  $callable            Callable
@param  integer   $priority            priority
@param  integer   $accepted_args       num count of accepted args / parameter
@param  boolean   $create              true if want to create new if not exists

@return boolean