func ensureReturnType(params: NimNode): NimNode {....raises: [], gcsafe, tags: [],
    forbids: [].}

func paramsTx(params: JsonNode; Format: type SerializationFormat): RequestParamsTx {.
    ...raises: [], gcsafe.}

func requestTx(name: string; params: sink RequestParamsTx; id: int): RequestTx {.
    ...raises: [], gcsafe, tags: [], forbids: [].}

iterator paramsIter(params: NimNode): tuple[ident, str, ntype: NimNode] {.
    ...raises: [], gcsafe, tags: [], forbids: [].}

template noWrap(returnType: type): auto {..}