Arguments to `PHP_ME`:
  1. Class name; Phalcon\Utils\Slug => Pahclon_Utils_Slug
  2. Method name (generate)
  3. Description of the arguments ([arg_info structure](https://github.com/dreamsxin/cphalcon/pull/8/files#pullrequestreviewcomment-5471311))
  4. Method flags:
    * public (ZEND_ACC_PUBLIC), protected (ZEND_ACC_PROTECTED) or private (ZEND_ACC_PRIVATE)
    * static (ZEND_ACC_STATIC)
    * abstract (ZEND_ACC_ABSTRACT)