I confirm that we don't provide such sample.

Examples of the use of COMMAND mode on the client side are only available for other libraries;
I refer, for instance, to the Basic Portfolio Demo and the Full Portfolio Demo, in pages\demos\PortfolioDemo_Basic and pages\demos\PortfolioDemo respectively.

In libraries more similar to the iOS case, there are just code samples which show the use of the APIs in the COMMAND mode case;
see, for instance, DOCS-SDKs\sdk_client_dotnet\examples\test\TestClient.cs and look for "command".

Do you have doubts on specific aspects?