'Wrapper around XCLI to call active storage.'

@proxy._trace_time
def _call_xiv_xcli(self, method, *args, **kwargs):

    self.ibm_storage_cli = self._get_xcli(self.ibm_storage_cli, self.active_backend_id)
    if self.ibm_storage_cli:
        LOG.info('_call_xiv_xcli    #1:    %s', method)
    else:
        LOG.debug('_call_xiv_xcli    #2:    %s', method)
    return getattr(self.ibm_storage_cli.cmd, method)(*args, **kwargs)
