code: protected void checkParams() {
  
          if ((m_defaultCollectorName == null) || (m_defaultCollectorParam == null)) {
              throw new CmsIllegalArgumentException(
                  Messages.get().container(
                      Messages.ERR_COLLECTOR_DEFAULTS_INVALID_2,
                      m_defaultCollectorName,
                      m_defaultCollectorParam));
          }
      }
docs: Checks if the required parameters have been set.<p>
  
  @see #setDefaultCollectorName(String)
  @see #setDefaultCollectorParam(String)