DynamoDBStreams - Unable to Create Document from Attribute Map After SDK v4 Upgrade

[corredorcatino]

Describe the bug

After upgrading to AWS SDK v4, it is no longer possible to create a Document from an attribute map due to the relocation of DynamoDB Streams models into a separate NuGet package.

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

The attribute map from a DynamoDB stream record should be convertible into a Document object as in previous SDK versions.

Current Behavior

Argument 1: cannot convert from 'System.Collections.Generic.Dictionary<string, Amazon.DynamoDBStreams.Model.AttributeValue>' to 'System.Collections.Generic.Dictionary<string, Amazon.DynamoDBv2.Model.AttributeValue>'

Reproduction Steps

getRecordsResponse = await dynamoDBStreams.GetRecordsAsync(recordsRequest, token);

foreach (Record record in getRecordsResponse.Records)
{
    Profile? oldImage = null;
    if (record.Dynamodb.OldImage is not null)
    {
        Document oldImageDocument = Document.FromAttributeMap(record.Dynamodb.OldImage); // Error
        oldImage = JsonSerializer.Deserialize<Profile>(oldImageDocument.ToJson());
    }
}

Possible Solution

Provide new static method to create a Document from the DynamoDBStreams models.

Creating a Document object is required to then serialize it as a JSON. An alternative of this could be to support direct JSON serialization of the DynamoDBStreams models, as it is done in the Lambda SDK.

Additional Information/Context

No response

AWS .NET SDK and/or Package version used

AWSSDK.DynamoDBv2 - 4.0.1.9
AWSSDK.DynamoDBStreams - 4.0.0.11

Targeted .NET Platform

.NET 8

Operating System and version

Windows 11