syntax_data: {"ast_node_type":"other","tokens":[{"end":43,"kind":"keyword","start":0,"text":"LocalExpnId::from_u32(idx.as_u32())"}]}
source_snippet:         LocalExpnId::from_u32(idx.as_u32())
context_before:     fn from_raw(idx: ExpnIndex) -> LocalExpnId {
context_after:     }