whole_func_string: function (bidd, callback) {
    if (!isDefine(bidd.arg)) callback()
    if (bidd.arg === 'on' || bidd.arg === 'once' && objLength(bidd.modifiers) === 0) callback()
  }
func_code_string: function (bidd, callback) {
    if (!isDefine(bidd.arg)) callback()
    if (bidd.arg === 'on' || bidd.arg === 'once' && objLength(bidd.modifiers) === 0) callback()
  }
func_documentation_string: (bidd → object{arg → string, modifiers → array}, callback → function)
  - check and call callback action