function _callERC20Token(address tokenAddress, bytes memory callData) internal returns (bool) {
    (bool success, bytes memory returnData) = tokenAddress.call(callData);
    return success && (returnData.length == uint256(0) || abi.decode(returnData, (bool)));
}
constructor(address gatewayImplementation, bytes memory params) {
    _setAddress(KEY_IMPLEMENTATION, gatewayImplementation);

   (bool success, ) = gatewayImplementation.delegatecall(
       abi.encodeWithSelector(IAxelarGateway.setup.selector, params)
   );

    if (!success) revert SetupFailed();
}
