docs: def is_cached(self, name):
          """Determines if the return value is cached. Always returns false if
          the registered value is not an instance of :class:`FunctionCache`.
  
          :param name:
              The name of the provider.
          """
          try:
              cached = super(Container, self).get(name).cached
          except AttributeError:
              cached = False
  
          return cached