code: def register_std(self):
          ''' Registers all the standard checkers in the given checker.
  
          If not present already, the standard checkers schema (STD_NAMESPACE) is
          added to the checker's namespace with an empty prefix.
          '''
          self._namespace.register(STD_NAMESPACE, '')
          for cond in _ALL_CHECKERS:
              self.register(cond, STD_NAMESPACE, _ALL_CHECKERS[cond]f register_std(self):
          ''' Registers all the standard checkers in the given checker.
  
          If not present already, the standard checkers schema (STD_NAMESPACE) is
          added to the checker's namespace with an empty prefix.
          '''
          self._namespace.register(STD_NAMESPACE, '')
          for cond in _ALL_CHECKERS:
              self.register(cond, STD_NAMESPACE, _ALL_CHECKERS[cond])
docs: Registers all the standard checkers in the given checker.
  
          If not present already, the standard checkers schema (STD_NAMESPACE) is
          added to the checker's namespace with an empty prefix.