code: public void process(CustomFieldContainer indicators, ProjectProperties properties, Props props)
     {
        m_container = indicators;
        m_properties = properties;
        m_data = props.getByteArray(Props.TASK_FIELD_ATTRIBUTES);
  
        if (m_data != null)
        {
           int columnsCount = MPPUtility.getInt(m_data, 4);
           m_headerOffset = 8;
           for (int loop = 0; loop < columnsCount; loop++)
           {
              processColumns();
           }
        }
     }
docs: The main entry point for processing graphical indicator definitions.
  
  @param indicators graphical indicators container
  @param properties project properties
  @param props properties data