svoid jTextPane_adjustTextSizeToFillParentHeight(JTextPane pane) {
  if (pane == null || getParent(pane) == null) ret;
  if (jTextPane_shouldDecreaseFontSizeToFillParentHeight(pane))
    jTextPane_shrinkTextSizeToFillParentHeight(pane);
  else if (jTextPane_shouldIncreaseFontSizeToFillParentHeight(pane)) swing {
    float size = pane.getFont().getSize2D();
    float newSize = size+1;
    print("new font size: " + newSize);
    setFontSize(pane, newSize);
    awtLater(50, r {
      jTextPane_adjustTextSizeToFillParentHeight(pane);
    });
  }
}