StdCallbackContext for replay deduping. Now developers do not need to provide a name when calling services. There is a unique call graph context maintained for each service call made. The context is request aware, so different requests made will have their own independent context for dedupe Dedupe identical requests ```java ProgressEvent<Model, StdCallbackContext> result = initiator.translateToServiceRequest(m -> createRepository) .makeServiceCall((r, c) -> c.injectCredentialsAndInvokeV2( r, c.client()::createRepository)) .success(); ProgressEvent<Model, StdCallbackContext> result_2 = // make same request call initiator.translateToServiceRequest(m -> createRepository) .makeServiceCall((r, c) -> c.injectCredentialsAndInvokeV2( r, c.client()::createRepository)) .success(); assertThat(result).isEqualsTo(result_2); ```

access the map and attempt to modify it

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- Remove handshake mode - Adding wait strategy that can be changed, defaulting to re-schedules with no local waits for Lambda binding - changes unit tests to reflect removal of handshake mode, fixed unit tests for serialization errors

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