syntax_data: {"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"Some(ReifyReason::FnPtr)"}]}
source_snippet:                 Some(ReifyReason::FnPtr) => p.write_str("-fnptr").unwrap(),
context_before:             match reason {
context_after:                 Some(ReifyReason::Vtable) => p.write_str("-vtable").unwrap(),