docs: @Override
      public void visitClassContext(ClassContext classContext) {
          JavaClass jclass = classContext.getJavaClass();
  
          // Check to see if the class references any other classes
          // which could be resources we want to track.
          // If we don't find any such classes, we skip analyzing
          // the class. (Note: could do this by method.)
          boolean sawResourceClass = false;
          for (int i = 0; i < jclass.getConstantPool().getLength(); ++i) {
              Constant constant = jclass.getConstantPool().getConstant(i);
              String className = null;
              if (constant instanceof ConstantMethodref) {
                  ConstantMethodref cmr = (ConstantMethodref) constant;
  
                  int classIndex = cmr.getClassIndex();
                  className = jclass.getConstantPool().getConstantString(classIndex, Const.CONSTANT_Class);
              } else if (constant instanceof ConstantInterfaceMethodref) {
                  ConstantInterfaceMethodref cmr = (ConstantInterfaceMethodref) constant;
  
                  int classIndex = cmr.getClassIndex();
                  className = jclass.getConstantPool().getConstantString(classIndex, Const.CONSTANT_Class);
              }
  
              if (className != null) {
                  if (DEBUG) {
                      System.out.println("FindOpenStream: saw class " + className);
                  }
  
                  for (String aPRESCREEN_CLASS_LIST : PRESCREEN_CLASS_LIST) {
                      if (className.indexOf(aPRESCREEN_CLASS_LIST) >= 0) {
                          sawResourceClass = true;
                          break;
                      }
                  }
              }
  
          }
  
          if (sawResourceClass) {
              super.visitClassContext(classContext);
          }
      }