def add_error_to_step(self, message, slug):
        step = self.get_step(slug)
        if step:
            step.add_error(message)
Adds a news sitemap to a site.
dataset/ETHPy150Open Havate/havate-openstack/proto-build/gui/horizon/Horizon_GUI/horizon/workflows/base.py/Workflow.add_error_to_step--crossover with--dataset/ETHPy150Open bradfitz/addressbooker/gdata/webmastertools/service.py/GWebmasterToolsService.AddNewsSitemap