protected function compileExtensions($value)
    {
        foreach ($this->extensions as $compiler) {
            $value = call_user_func($compiler, $value, $this);
        }

        return $value;
    }
protected function compileExtensions($value)
    {
        foreach ($this->extensions as $compiler) {
            $value = call_user_func($compiler, $value, $this);
        }

        return $value;
    }
protected function compileExtensions ( $ value ) { foreach ( $ this -> extensions as $ compiler ) { $ value = call_user_func ( $ compiler , $ value , $ this ) ; } return $ value ; }
Execute the user defined extensions.

@param  string  $value
@return string
Execute the user defined extensions .