syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"|"}]}
source_snippet:         | &ExprKind::ValueTypeAscription { source, .. } => {
context_before:         &ExprKind::PlaceTypeAscription { source, .. }
context_after:             recurse_build(tcx, body, source, root_span)?