syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"|"}]}
source_snippet:         | PlaceContext::MutatingUse(MutatingUseContext::Borrow) => {
context_before:         PlaceContext::NonMutatingUse(NonMutatingUseContext::SharedBorrow)
context_after:             // Pointer should be checked unconditionally.