public void basicBlocksCountChanged() {
    // Do nothing by default
  }
Base class for change listeners that listen for changes in the number of diff entities. This
avoids having empty implementations scattered all over the code base.

@author cblichmann@google.com (Christian Blichmann)
java/ui/src/main/java/com/google/security/zynamics/bindiff/project/diff/CountsChangedListener.java