Values.AwsDynamoDbTableKeySchemaSourceA component of the key schema for the DynamoDB table, a global secondary index, or a local secondary index.
type nonrec t = {attributeName : NonEmptyString.t option;The name of the key schema attribute.
*)keyType : NonEmptyString.t option;The type of key used for the key schema attribute. Valid values are HASH or RANGE.
*)}