lib/Twig/lib/Twig/Compiler.php
public function addIndentation()
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use write(\'\') instead.', E_USER_DEPRECATED);

        $this->source .= str_repeat(' ', $this->indentation * 4);

        return $this;
    }
public function addIndentation()
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use write(\'\') instead.', E_USER_DEPRECATED);

        $this->source .= str_repeat(' ', $this->indentation * 4);

        return $this;
    }
Appends an indentation to the current PHP code after compilation.

@return $this

@deprecated since 1.27 (to be removed in 2.0).