src/class-wp-register.php
public static function unify( $id, $params, $minify = '' ) {

		self::$id     = $id;
		self::$unify  = $params;
		self::$minify = $minify;

		return true;
	}
public static function unify( $id, $params, $minify = '' ) {

		self::$id     = $id;
		self::$unify  = $params;
		self::$minify = $minify;

		return true;
	}
Sets whether to merge the content of files into a single file.

@since 1.0.4

@param string  $id     → unique identifier for unified file.
@param mixed   $params → path urls.
@param boolean $minify → minimize file content.

@return boolean true