code: public boolean hasRequiredClientProps() {
      boolean valid = true;
      valid &= verifyStringPropSet(CONNECTION_APPLICATION_NAME_PROP, CLIENT_APPLICATION_NAME_PROP);
      valid &= verifyStringPropSet(ACCUMULO_USER_PROP, CLIENT_ACCUMULO_USER_PROP);
      valid &= verifyStringPropSet(ACCUMULO_PASSWORD_PROP, CLIENT_ACCUMULO_PASSWORD_PROP);
      valid &= verifyStringPropSet(ACCUMULO_INSTANCE_PROP, CLIENT_ACCUMULO_INSTANCE_PROP);
      return valid;
    }
docs: Returns true if required properties for FluoClient are set