interface IGatewayRegistry {
    /// @notice Returns the Gateway contract for the given RenERC20
    ///         address.
    ///
    /// @param _tokenAddress The address of the RenERC20 contract.
    function getGatewayByToken(address _tokenAddress) external view returns (IGateway);
}
function getGatewayByToken(address _tokenAddress) external view returns (IGateway);

/// @notice Returns the Gateway contract for the given RenERC20
///         address.
///
/// @param _tokenAddress The address of the RenERC20 contract.