private Map<String, String> getProperties() {
    Map<String, String> props = myProperties;
    if (props == null) {
      props = new HashMap<>(myModuleConfiguration.properties);
      String timestampFormat = props.get(MAVEN_BUILD_TIMESTAMP_FORMAT_PROPERTY);
      if (timestampFormat == null) {
        timestampFormat = "yyyyMMdd-HHmm"; // See ModelInterpolator.DEFAULT_BUILD_TIMESTAMP_FORMAT
      }
      props.put(MAVEN_BUILD_TIMESTAMP_PROPERTY, new SimpleDateFormat(timestampFormat).format(myTimestamp));
      myProperties = props;
    }
    return props;
  }
private Map<String, String> getProperties()