code: def provide(self, name):
          
          rv = self[name]
          return rv(self) if callable(rv) else rv
docs: Gets the value registered with ``name`` and determines whether the
          value is a provider or a configuration setting. The ``KeyError`` is
          raised when the ``name`` is not found.
  
          The registered value is interpreted as a provider if it's callable. The
          provider is called with a single argument, the current
          :class:`Container` object. Returns the return value of a provider or
          the value itself in case the value is not callable.
  
          :param name:
              The name of the provider or configuration setting.