syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"PlaceContext::MutatingUse(MutatingUseContext::SetDiscriminant)"}]}
source_snippet:             PlaceContext::MutatingUse(MutatingUseContext::SetDiscriminant) => {
context_before:             // a def because it does not overwrite the whole place
context_after:                 place.is_indirect().then_some(DefUse::Use)