code: public void setPaneSizeMin(int paneSizeMin) {
          mPaneSizeMin = paneSizeMin;
          if (isMeasured) {
              int newSplitterPosition = clamp(mSplitterPosition, getMinSplitterPosition(), getMaxSplitterPosition());
              if(newSplitterPosition != mSplitterPosition) {
                  setSplitterPosition(newSplitterPosition);
              }
          }
      }
docs: Sets the minimum size of panes, in pixels.
  
  @param paneSizeMin the minimum size of panes, in pixels