void apply() {
    for (AntInstallation ant : myForm.getRemovedAnts()) {
      myAntConfiguration.removeConfiguration(ant);
    }

    final Map<AntReference, AntInstallation> currentAnts = myAntConfiguration.getConfiguredAnts();
    for (AntInstallation installation : currentAnts.values()) {
      installation.updateClasspath();
    }

    for (AntInstallation ant : myForm.getAddedAnts()) {
      myAntConfiguration.addConfiguration(ant);
    }
    myForm.applyModifications();
  }
void apply()