{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"hir::ExprKind::Call(callee,"}]}
            hir::ExprKind::Call(callee, _) => Some(*callee),
        let callee_expr = match &call_expr.peel_blocks().kind {
            hir::ExprKind::MethodCall(_, receiver, ..) => {