syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"on_all_children_bits(move_data,"}]}
source_snippet:             on_all_children_bits(move_data, child_index, each_child);
context_before:         while let Some(child_index) = next_child_index {
context_after:             next_child_index = move_data.move_paths[child_index].next_sibling;