code: @Override
      public Object getAttribute(String name) {
          if (name == null) {
              logger.logp(Level.SEVERE, CLASS_NAME, "getAttribute", servlet40NLS.getString("name.is.null"));
              throw new java.lang.NullPointerException(servlet40NLS.getString("name.is.null"));
          }
  
          return super.getAttribute(name);
      }
docs: /*
  Throw NPE if name is null
  
  @see com.ibm.ws.webcontainer.webapp.WebApp#getAttribute(java.lang.String)