syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"value:"}]}
source_snippet:                 value: self.thir.exprs.push(expr),
context_before:                 region_scope: expr_scope,
context_after:                 lint_level: LintLevel::Explicit(hir_expr.hir_id),