private long modifyTable(final TableName tableName,
    final TableDescriptorGetter newDescriptorGetter, final long nonceGroup, final long nonce,
    final boolean shouldCheckDescriptor) throws IOException {
    return modifyTable(tableName, newDescriptorGetter, nonceGroup, nonce, shouldCheckDescriptor,
      true);
  }
Implement to return TableDescriptor after pre-checks
hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java