@Override
  public String getLogFileName() {
    return defaultIfBlank(getMemberName(), DEFAULT_LOCATOR_LOG_NAME)
        .concat(DEFAULT_LOCATOR_LOG_EXT);
  }
Gets the name of the log file used to log information about this Locator.

@return a String value indicating the name of this Locator's log file.
geode-core/src/main/java/org/apache/geode/distributed/LocatorLauncher.java