{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"hir::ExprKind::Call(path,"}]}
                hir::ExprKind::Call(path, _) => {
                // check for call to `core::ptr::null` or `core::ptr::null_mut`
                    if let hir::ExprKind::Path(ref qpath) = path.kind