{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"$($(AstFragment::$Kind(ast)"}]}
                    $($(AstFragment::$Kind(ast) => $ast_to_string(ast),)?)*
                    AstFragment::MethodReceiverExpr(expr) => pprust::expr_to_string(expr),
                    $($(