* @param[in] enabled false if derived class wants to control when visual is set on stage
* @param[in] depthIndexValueSet Set to true if the depthIndex has actually been set manually
* @param[in] depthIndex The visual's depth-index is set to this
* @param[in] enabled false if derived class wants to control when visual is set on stage
* @param[in] depthIndexValueSet Set to true if the depthIndex has actually been set manually
* @param[in] depthIndex The visual's depth-index is set to this