def create_domain(self,
		service_id, 
		version_number, 
		name, 
		comment=None):
		"""Create a domain for a particular service and version."""
		body = self._formdata({
			"name": name,
			"comment": comment,

		}, FastlyDomain.FIELDS)
		content = self._fetch("/service/%s/version/%d/domain" % (service_id, version_number), method="POST", body=body)
		return FastlyDomain(self, content)