syntax_data: {"ast_node_type":"other","tokens":[{"end":13,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:             }
context_before:                 ProjectionElem::ConstantIndex { offset, min_length, from_end }
context_after:             ProjectionElem::Downcast(a, u) => ProjectionElem::Downcast(a, u),