docs: @Override
      public void dispose () throws SmbException {
          this.isEstablished = false;
          this.sealClientHandle = null;
          this.sealServerHandle = null;
          this.sealClientKey = null;
          this.sealServerKey = null;
          this.masterKey = null;
          this.signKey = null;
          this.verifyKey = null;
          this.type1Bytes = null;
      }