def METHOD_NAME(self, project_id):
    """Link a project to the Cloud Operations Account.
    Args:
        project_id (str): Project id to link.
    Returns:
        obj: API result.
    """
    data = self._get_monitored_project(project_id)
    operation = self.service.accounts().projects().create(
        parent=self.account_name, body=data).execute()
    pp.pprint(operation)
    if not self.no_poll:
        self._poll(operation['name'])
    return operation