public function load($source)
	{
		// if $source is not a string, short-circuit
		if ( ! is_string($source)) {
			throw new \InvalidArgumentException(
				__METHOD__."() expects parameter one, source, to be a string file name"
			);
		}
		
		// otherwise, create a new file chunker
		$chunker = new \Jstewmc\Chunker\File($source);
		
		return $this->create($chunker);
	}