try
{
subtreeSpecification = parser.parse( initialSubtreeSpecification );
if ( subtreeSpecification == null )
{
subtreeSpecification = new BaseSubtreeSpecification();
}
}
catch ( ParseException pe )
{
// TODO
pe.printStackTrace();
subtreeSpecification = new BaseSubtreeSpecification();
}
exclusions = new ArrayList<String>();
Set chopBeforeExclusions = subtreeSpecification.getChopBeforeExclusions();
for ( Object chopBeforeExclusion : chopBeforeExclusions )