def METHOD_NAME(tree_nodes):
    # conversion from sklearn>=1.3 tree nodes format to previous format:
    # removal of 'missing_go_to_left' field from node dtype
    new_field = "missing_go_to_left"
    new_dtype = tree_nodes.dtype
    old_dtype = np.dtype(
        [
            (key, value[0])
            for key, value in new_dtype.fields.items()
            if key != new_field
        ]
    )
    return require_fields(tree_nodes, old_dtype)