private String validateHttpBindAddress(InetAddress val) {
    if (val == null) {
      throw new IllegalArgumentException(
          "HttpBindAddress must not be null");
    }
    return toString("", val);
  }
Validates that httpBindAddress is not null and then returns the string form of it.
geode-core/src/main/java/org/apache/geode/admin/jmx/internal/AgentConfigImpl.java