code: private boolean checkWriteConfiguration() {
  
          if ((m_fieldconfiguration != null) || m_fieldconfiguration.getFields().isEmpty()) {
              for (CmsSearchField field : m_fieldconfiguration.getFields()) {
                  if (field.getMappings().isEmpty()) {
                      return false;
                  }
              }
              return true;
          }
          return false;
      }
docs: Checks the configuration to write.<p>
  
  @return true if configuration is valid, otherwise false