docs: private int taintPriority(OpcodeStack.Item writing) {
          if (writing == null) {
              return Priorities.NORMAL_PRIORITY;
          }
          XMethod method = writing.getReturnValueOf();
          if (method != null && "getParameter".equals(method.getName())
                  && "javax.servlet.http.HttpServletRequest".equals(method.getClassName())) {
              return Priorities.HIGH_PRIORITY;
          }
          return Priorities.NORMAL_PRIORITY;
      }