[Question] Is the responseTimeout configuration item of the httpclient plugin useful?

### Question

I see the responseTimeout configuration item in the HttpClientProperties class, but I don't see this configuration item used in any Java code. Is this configuration item effective?

Start by locating HttpClientProperties and tracing responseTimeout through the httpclient plugin's Java code. Check whether the value reaches the underlying request configuration and whether relevant tests cover it; done means confirming its behavior and identifying the evidence needed to resolve the question.

Written by the indexing model from the issue text.