void copyFrom(final AbstractTab from) {
    myIndex = from.myIndex;
    myDefaultIndex = from.myDefaultIndex;
    myDisplayName = from.myDisplayName;
    myIcon = from.myIcon;

    myLeftProportion = from.myLeftProportion;
    myRightProportion = from.myRightProportion;
    myBottomProportion = from.myBottomProportion;

    myLeftDetached = from.myLeftDetached;
    myCenterDetached = from.myCenterDetached;
    myRightDetached = from.myRightDetached;
    myBottomDetached = from.myBottomDetached;
  }
void copyFrom(final AbstractTab from)