code: private void visit_OP_UPDATE_MASTER_KEY()
      throws IOException {
      visitTxId();  
        v.visitVInt(  EditsElement.KEY_ID);
        v.visitVLong( EditsElement.KEY_EXPIRY_DATE);
        VIntToken blobLengthToken = v.visitVInt(EditsElement.KEY_LENGTH);
        v.visitBlob(EditsElement.KEY_BLOB, blobLengthToken.value);
    }
docs: Visit OP_UPDATE_MASTER_KEY