code: public void clearBody() {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.entry(this, tc, "clearBody");
      softRefToDocument = null;
      clearCachedLengths();
      getPayload().setChoiceField(JmsTextBodyAccess.BODY, JmsTextBodyAccess.IS_BODY_EMPTY);
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.exit(this, tc, "clearBody");
    }
docs: /*
  Clear the message body.
  
  Javadoc description supplied by JsJmsMessage interface.