code: @Override
      @Trivial
      public void open() throws ClassSource_Exception {
          String methodName = "open";
          if ( tc.isDebugEnabled() ) {
              Tr.debug(tc, MessageFormat.format("[ {0} ] [ {1} ] ENTER/RETURN", getHashText(), methodName));
          }
      }
docs: /*
  <p>Open the class source to begin processing. This implementation is a NO-OP.</p>
  
  @throws ClassSource_Exception Thrown in case the open fails. Never
  thrown by this implementation.