public File getPropertyFile() {
    File f;
    if (url == null) {
      f = new File(retrievePropertyFile());
      if (!f.isAbsolute()) {
        // save to <cwd>/propertyFile
        f = new File(System.getProperty("user.dir"), retrievePropertyFile());
      }
    } else {
      f = new File(url.getFile());
    }
    return f;
  }
Returns the default property file that will be used when configuration is saved.
geode-core/src/main/java/org/apache/geode/admin/jmx/internal/AgentConfigImpl.java