code: public Optional<CmsADEConfigurationSequence> getParent() {
  
          if (m_configIndex <= 0) {
              return Optional.absent();
          }
          return Optional.fromNullable(new CmsADEConfigurationSequence(m_configDatas, m_configIndex - 1));
      }
docs: Returns a sequence which only differs from this instance in that its index is one less.<p>
  
  However, if the index of this instance is already 0, Optional.absent will be returned.
  
  @return the parent sequence, or Optional.absent if we are already at the start of the sequence