def METHOD_NAME(manifest_node) -> bool:
    """
    Check if the manifest node is an ephemeral node
    """
    if (
        hasattr(manifest_node, "config")
        and manifest_node.config
        and hasattr(manifest_node.config, "materialized")
        and manifest_node.config.materialized == "ephemeral"
    ):
        return True
    return False