def get_head_node_tags(cluster):
    "Return the given cluster's head node's tags."
    head_node_instance_id = get_head_node_instance_id(cluster)
    return get_ec2_instance_tags(head_node_instance_id, cluster.region)
Return the given cluster's head node's tags.
def get_head_node_tags(cluster):
    
    head_node_instance_id = get_head_node_instance_id(cluster)
    return get_ec2_instance_tags(head_node_instance_id, cluster.region)