def METHOD_NAME(self, log_group_name):
    """Return log group identified by the given log group name."""
    for group in self.describe_log_groups(log_group_name_prefix=log_group_name):
        if group.get("logGroupName") == log_group_name:
            return group
    raise AWSClientError(function_name="describe_log_groups", message=f"Log Group {log_group_name} not found")