new BusyWorker(m_container.getWaitService()) {
@Override
protected void doWork() {
try {
m_Migration = new Migration(TreeMapper.this, newTransformation);
m_Migration.setSize(new Dimension(900, 800));
m_Migration.init();
} catch (MigrationInitializationException ex) {
ErrorLog.attention(TreeMapper.class, "Failed to start the migration tool.", ex);
}