syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// intermediate `Place` values until we know the full set of projections.
context_before:     /// This is used when constructing a compound `Place`, so that we can avoid creating
context_after:     /// Mutability note: The caller of this method promises only to read from the resulting