async def AddPendingResources(self, application_tag, charm_url, resources):
        """Fix the calling signature of AddPendingResources.

        The ResourcesFacade doesn't conform to the standard facade pattern in
        the Juju source, which leads to the schemagened code not matching up
        properly with the actual calling convention in the API.  There is work
        planned to fix this in Juju, but we have to work around it for now.

        application_tag : str
        charm_url : str
        resources : typing.Sequence<+T_co>[~CharmResource]<~CharmResource>
        Returns -> typing.Union[_ForwardRef('ErrorResult'),
                                typing.Sequence<+T_co>[str]]
        """
        # map input types to rpc msg
        _params = dict()
        msg = dict(type='Resources',
                   request='AddPendingResources',
                   version=1,
                   params=_params)
        _params['tag'] = application_tag
        _params['url'] = charm_url
        _params['resources'] = resources
        reply = await self.rpc(msg)
        return reply
Fix the calling signature of AddPendingResources.

        The ResourcesFacade doesn't conform to the standard facade pattern in
        the Juju source, which leads to the schemagened code not matching up
        properly with the actual calling convention in the API.  There is work
        planned to fix this in Juju, but we have to work around it for now.

        application_tag : str
        charm_url : str
        resources : typing.Sequence<+T_co>[~CharmResource]<~CharmResource>
        Returns -> typing.Union[_ForwardRef('ErrorResult'),
                                typing.Sequence<+T_co>[str]]