def gcp_store_authentication(self):
self._validate_key_set()<EOL>if not GcpAuthenticator.original_account:<EOL><INDENT>GcpAuthenticator.original_account = self.check_output(<EOL>['<STR_LIT>', '<STR_LIT>', '<STR_LIT>', '<STR_LIT>', '<STR_LIT>'.format(self.project_id)]<EOL>).decode('<STR_LIT:utf-8>')<EOL>self.log.info("<STR_LIT>".format(GcpAuthenticator.original_account))<EOL><DEDENT>
Store authentication as it was originally so it can be restored and revoke
authentication.