syntax_data: {"ast_node_type":"import","tokens":[{"end":84,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// If you do not need to modify the span, use [`find_ancestor_inside`] instead.
context_before:     /// [`find_ancestor_in_same_ctxt`] and should be preferred when extending the returned span.
context_after:     ///