public function filter( $sizes ) {
		$sizes = apply_filters( Config::KATANA_FILTER, $sizes, $this->request_id() );
		return $sizes;
	}
public function filter( $sizes ) {
		$sizes = apply_filters( Config::KATANA_FILTER, $sizes, $this->request_id() );
		return $sizes;
	}
public function filter ( $ sizes ) { $ sizes = apply_filters ( Config :: KATANA_FILTER , $ sizes , $ this -> request_id ( ) ) ; return $ sizes ; }
WP default filter that runs before the images are being generated, then
appplies the custom filter from Katana.

@since 1.0.0

@lik http://codex.wordpress.org/Plugin_API/Filter_Reference/intermediate_image_sizes.html

@param array $sizes The register sizes of images in WP.
@return array $sizes The array of sizes
WP default filter that runs before the images are being generated then appplies the custom filter from Katana .