code: private void processCustomValueLists() throws IOException
     {
        DirectoryEntry taskDir = (DirectoryEntry) m_projectDir.getEntry("TBkndTask");
        Props taskProps = new Props12(m_inputStreamFactory.getInstance(taskDir, "Props"));
  
        CustomFieldValueReader12 reader = new CustomFieldValueReader12(m_file.getProjectProperties(), m_file.getCustomFields(), m_outlineCodeVarMeta, m_outlineCodeVarData, m_outlineCodeFixedData, m_outlineCodeFixedData2, taskProps);
        reader.process();
     }
docs: This method extracts and collates the value list information
  for custom column value lists.