code: @Override
      public void sawOpcode(int seen) {
          try {
              stack.precomputation(this);
  
              if (seen == Const.INVOKEINTERFACE) {
                  processInvokeInterface();
  
              } else if (seen == Const.INVOKESPECIAL) {
                  processInvokeSpecial();
              }
          } finally {
              stack.sawOpcode(this, seen);
          }
      }
docs: implements the visitor to find accesses to maps, sets and lists using arrays
  
  @param seen
  the currently visitor opcode