Availability of link support in AWS SDK

1) Need feature 'link' [1] available for AWS SDK for Xray ? The link which is provided is for Open Telemetry. We are using AWS SDK in our code base and need the same support in AWS SDK as well.

Use Case:

Suppose traces are linked using the logic mentioned in [1] there will be a single trace with 3 branches for this use case. Is it possible to measure time taken for 3 different path within a trace?

Single trace is as given below

A - Topic x - B, C, D

From this single trace is it possible to find time taken for part of a trace?

Part 1 A - Topic x - B
Part 2 A - Topic x - C
Part 3 A - Topic x - D

Reference Link:

[1]. https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/overview.md#links-between-spans