public IAddress getPrimaryFunctionAddr(final IAddress secAddr) {
    final FunctionMatchData match = functionMatches.get(secAddr, ESide.SECONDARY);
    return match != null ? match.getIAddress(ESide.PRIMARY) : null;
  }
Holds diff metadata, function matches and listeners.
java/ui/src/main/java/com/google/security/zynamics/bindiff/project/matches/MatchData.java