Compiles the node to PHP.
Twig_Compiler A Twig_Compiler instance:
Overrides Twig_Node_Print::compile
public function compile(Twig_Compiler $compiler) {
$compiler
->addDebugInfo($this)
->write('echo $this->env->getExtension(\'sandbox\')->ensureToStringAllowed(')
->subcompile($this
->getNode('expr'))
->raw(");\n");
}