Serialized Form javadoc (1.6.0-rc-b67) for java.awt.GridBagConstraints class
does not contain descriptions for new serializable fields which have been added
in Mustang:
  ...
  int ascent
  int descent
  Component.BaselineResizeBehavior baselineResizeBehavior
  int centerPadding
  int centerOffset
  ...
Please provide correct javadoc for these fields or mark them as "transient".