code: @Override
      public float getMaximumSpan(int axis)
      {
          if (view != null) { return view.getMaximumSpan(axis); }
          return Integer.MAX_VALUE;
      }
docs: Determines the maximum span for this view along an axis.
  
  @param axis
  may be either X_AXIS or Y_AXIS
  @return the span the view would like to be rendered into. Typically the
  view is told to render into the span that is returned, although
  there is no guarantee. The parent may choose to resize or break
  the view.