syntax_data: {"ast_node_type":"import","tokens":[{"end":96,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// Top. Also, because this will copy all entries one after another, it may only be used for
context_before:     /// If `target` contains a place that is not contained in `source`, it will be overwritten with
context_after:     /// places that are non-overlapping or identical.