code: @Override
      public void setCharacterEncoding(String arg0) throws UnsupportedEncodingException {
          try {
              collaborator.preInvoke(componentMetaData);
              request.setCharacterEncoding(arg0);
          } finally {
              collaborator.postInvoke();
          }
  
      }
docs: /*
  (non-Javadoc)
  
  @see javax.servlet.ServletRequest#setCharacterEncoding(java.lang.String)