Generate an XML sitemap.

		Args:
		  path (str): The name of the file to write to.
		  https (bool): If True, links inside the sitemap with relative scheme
		    (e.g. example.com/something) will be set to HTTPS. If False (the
		    default), they will be set to plain HTTP.

def generate_sitemap(self, path='sitemap.xml', https=False):
		"""
		Generate an XML sitemap.

		Args:
		  path (str): The name of the file to write to.
		  https (bool): If True, links inside the sitemap with relative scheme
		    (e.g. example.com/something) will be set to HTTPS. If False (the
		    default), they will be set to plain HTTP.
		"""
		sitemap = russell.sitemap.generate_sitemap(self, https=https)
		self.write_file(path, sitemap)