if (!checkMergeIsPossible(repository, getShell(event)))
return null;
BasicConfigurationDialog.show(repository);
MergeTargetSelectionDialog mergeTargetSelectionDialog = new MergeTargetSelectionDialog(
getShell(event), repository);
if (mergeTargetSelectionDialog.open() == IDialogConstants.OK_ID) {
final String refName = mergeTargetSelectionDialog.getRefName();
String jobname = NLS.bind(UIText.MergeAction_JobNameMerge, refName);
final MergeOperation op = new MergeOperation(repository, refName);