syntax_data: {"ast_node_type":"variable","tokens":[{"end":57,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let parent_depends_on_cycle = match context {
context_before:             parent.heads.extend_from_child(parent_index, step_kind_from_parent, heads);
context_after:                 UpdateParentGoalCtxt::Ordinary(nested_goals) => {