private void ClearTableData()
{
Keys = new Dictionary<string, KeyDescription>();
HashKeys = new List<string>();
RangeKeys = new List<string>();
LocalSecondaryIndexes = new Dictionary<string, LocalSecondaryIndexDescription>();
LocalSecondaryIndexNames = new List<string>();
GlobalSecondaryIndexes = new Dictionary<string, GlobalSecondaryIndexDescription>();
GlobalSecondaryIndexNames = new List<string>();
Attributes = new List<AttributeDefinition>();
}