code: private void processNullLayouts(String className, String methodName) {
          if ("java/awt/Container".equals(className) && "setLayout".equals(methodName) && (stack.getStackDepth() > 0) && stack.getStackItem(0).isNull()) {
              bugReporter.reportBug(new BugInstance(this, BugType.S508C_NULL_LAYOUT.name(), NORMAL_PRIORITY).addClass(this).addMethod(this).addSourceLine(this));
          }
      }
docs: looks for containers where a null layout is installed
  
  @param className
  class that a method call is made on
  @param methodName
  name of the method that is called