gistfile1.php

	public function apply(comparable $name, comparable $value, callable $callable)
	{
		$this->values->ifContains($name, function($values) use ($value, $callable) {
				$values->ifContains($value, function($value) use ($callable) {
						$this->objects->apply($value, function($objects) use ($callable) {
								$objects->walk($callable);
							}
						);
					}
				);
			}
		);

		return $this;
	}