protected override void Increment(IDvInvocation aInvocation, uint aValue, out uint aResult)
 {
     uint version = aInvocation.Version();
     if (version != 1)
         throw new Exception(String.Format("Unexpected result - {0} - from IDvInvocation.Version", version));
     aResult = aValue + 1;
 }

 /// <summary>
 /// SetNextAVTransportURI action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// SetNextAVTransportURI action for the owning device.
 ///
 /// Must be implemented iff EnableActionSetNextAVTransportURI was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aNextURI"></param>
 /// <param name="aNextURIMetaData"></param>
 protected virtual void SetNextAVTransportURI(IDvInvocation aInvocation, uint aInstanceID, string aNextURI, string aNextURIMetaData)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// GetProtocolInfo action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// GetProtocolInfo action for the owning device.
 ///
 /// Must be implemented iff EnableActionGetProtocolInfo was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aSource"></param>
 /// <param name="aSink"></param>
 protected virtual void GetProtocolInfo(IDvInvocation aInvocation, out string aSource, out string aSink)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// GetCurrentConnectionIDs action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// GetCurrentConnectionIDs action for the owning device.
 ///
 /// Must be implemented iff EnableActionGetCurrentConnectionIDs was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aConnectionIDs"></param>
 protected virtual void GetCurrentConnectionIDs(IDvInvocation aInvocation, out string aConnectionIDs)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// SelectPreset action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// SelectPreset action for the owning device.
 ///
 /// Must be implemented iff EnableActionSelectPreset was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aPresetName"></param>
 protected virtual void SelectPreset(IDvInvocation aInvocation, uint aInstanceID, string aPresetName)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// GetVolumeDBRange action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// GetVolumeDBRange action for the owning device.
 ///
 /// Must be implemented iff EnableActionGetVolumeDBRange was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aChannel"></param>
 /// <param name="aMinValue"></param>
 /// <param name="aMaxValue"></param>
 protected virtual void GetVolumeDBRange(IDvInvocation aInvocation, uint aInstanceID, string aChannel, out int aMinValue, out int aMaxValue)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// GetVerticalKeystone action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// GetVerticalKeystone action for the owning device.
 ///
 /// Must be implemented iff EnableActionGetVerticalKeystone was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aCurrentVerticalKeystone"></param>
 protected virtual void GetVerticalKeystone(IDvInvocation aInvocation, uint aInstanceID, out int aCurrentVerticalKeystone)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// GetSharpness action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// GetSharpness action for the owning device.
 ///
 /// Must be implemented iff EnableActionGetSharpness was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aCurrentSharpness"></param>
 protected virtual void GetSharpness(IDvInvocation aInvocation, uint aInstanceID, out uint aCurrentSharpness)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// SetRedVideoGain action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// SetRedVideoGain action for the owning device.
 ///
 /// Must be implemented iff EnableActionSetRedVideoGain was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aDesiredRedVideoGain"></param>
 protected virtual void SetRedVideoGain(IDvInvocation aInvocation, uint aInstanceID, uint aDesiredRedVideoGain)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// SetMute action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// SetMute action for the owning device.
 ///
 /// Must be implemented iff EnableActionSetMute was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aChannel"></param>
 /// <param name="aDesiredMute"></param>
 protected virtual void SetMute(IDvInvocation aInvocation, uint aInstanceID, string aChannel, bool aDesiredMute)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// SetGreenVideoBlackLevel action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// SetGreenVideoBlackLevel action for the owning device.
 ///
 /// Must be implemented iff EnableActionSetGreenVideoBlackLevel was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aDesiredGreenVideoBlackLevel"></param>
 protected virtual void SetGreenVideoBlackLevel(IDvInvocation aInvocation, uint aInstanceID, uint aDesiredGreenVideoBlackLevel)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// SetContrast action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// SetContrast action for the owning device.
 ///
 /// Must be implemented iff EnableActionSetContrast was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aDesiredContrast"></param>
 protected virtual void SetContrast(IDvInvocation aInvocation, uint aInstanceID, uint aDesiredContrast)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// SetColorTemperature action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// SetColorTemperature action for the owning device.
 ///
 /// Must be implemented iff EnableActionSetColorTemperature was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aDesiredColorTemperature"></param>
 protected virtual void SetColorTemperature(IDvInvocation aInvocation, uint aInstanceID, uint aDesiredColorTemperature)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// Stop action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// Stop action for the owning device.
 ///
 /// Must be implemented iff EnableActionStop was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 protected virtual void Stop(IDvInvocation aInvocation, uint aInstanceID)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// SetRecordQualityMode action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// SetRecordQualityMode action for the owning device.
 ///
 /// Must be implemented iff EnableActionSetRecordQualityMode was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aNewRecordQualityMode"></param>
 protected virtual void SetRecordQualityMode(IDvInvocation aInvocation, uint aInstanceID, string aNewRecordQualityMode)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// GetMute action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// GetMute action for the owning device.
 ///
 /// Must be implemented iff EnableActionGetMute was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aChannel"></param>
 /// <param name="aCurrentMute"></param>
 protected virtual void GetMute(IDvInvocation aInvocation, uint aInstanceID, string aChannel, out bool aCurrentMute)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// GetRedVideoGain action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// GetRedVideoGain action for the owning device.
 ///
 /// Must be implemented iff EnableActionGetRedVideoGain was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aCurrentRedVideoGain"></param>
 protected virtual void GetRedVideoGain(IDvInvocation aInvocation, uint aInstanceID, out uint aCurrentRedVideoGain)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// SetSharpness action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// SetSharpness action for the owning device.
 ///
 /// Must be implemented iff EnableActionSetSharpness was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aDesiredSharpness"></param>
 protected virtual void SetSharpness(IDvInvocation aInvocation, uint aInstanceID, uint aDesiredSharpness)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// GetStateVariables action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// GetStateVariables action for the owning device.
 ///
 /// Must be implemented iff EnableActionGetStateVariables was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aStateVariableList"></param>
 /// <param name="aStateVariableValuePairs"></param>
 protected virtual void GetStateVariables(IDvInvocation aInvocation, uint aInstanceID, string aStateVariableList, out string aStateVariableValuePairs)
 {
     throw (new ActionDisabledError());
 }

 /// <summary>
 /// SetStateVariables action.
 /// </summary>
 /// <remarks>Will be called when the device stack receives an invocation of the
 /// SetStateVariables action for the owning device.
 ///
 /// Must be implemented iff EnableActionSetStateVariables was called.</remarks>
 /// <param name="aInvocation">Interface allowing querying of aspects of this particular action invocation.</param>
 /// <param name="aInstanceID"></param>
 /// <param name="aRenderingControlUDN"></param>
 /// <param name="aServiceType"></param>
 /// <param name="aServiceId"></param>
 /// <param name="aStateVariableValuePairs"></param>
 /// <param name="aStateVariableList"></param>
 protected virtual void SetStateVariables(IDvInvocation aInvocation, uint aInstanceID, string aRenderingControlUDN, string aServiceType, string aServiceId, string aStateVariableValuePairs, out string aStateVariableList)
 {
     throw (new ActionDisabledError());
 }