src/engines/class-twig-engine.php
public function instance() {
		if ( ! isset( self::$environment ) ) {
			self::$environment = $this->boot();
		}

		return self::$environment;
	}
public function instance() {
		if ( ! isset( self::$environment ) ) {
			self::$environment = $this->boot();
		}

		return self::$environment;
	}
public function instance ( ) { if ( ! isset ( self :: $ environment ) ) { self :: $ environment = $ this -> boot ( ) ; } return self :: $ environment ; }
Get the Twig environment instance.

@return \Twig_Environment
Get the Twig environment instance .