syntax_data: {"ast_node_type":"other","tokens":[{"end":36,"kind":"keyword","start":0,"text":"projections:"}]}
source_snippet:     projections: &[PlaceElem<'tcx>],
context_before:     var_hir_id: LocalVarId,
context_after: ) -> Option<(usize, &'a Capture<'tcx>)> {