Missing domains in web_search_call.action

From https://platform.openai.com/docs/guides/tools-web-search?api-mode=responses#output-and-citations

Output and citations

Model responses that use the web search tool will include two parts:

A web_search_call output item with the ID of the search call, along with the action taken in web_search_call.action. The action is one of:

• search, which represents a web search. It will usually (but not always) includes the search query and domains which were searched. Search actions incur a tool call cost (see pricing).

Issue

The Search(ResponseFunctionWebSearch->Action->Search) class does not have domains field.

 class Search
        private constructor(
            private val query: JsonField<String>,
            private val type: JsonValue,
            private val additionalProperties: MutableMap<String, JsonValue>,
        ) {

Start by locating the ResponseFunctionWebSearch->Action->Search class and compare its fields with the web search documentation linked in the issue. Add the missing domains field so search actions expose the domains that were searched, then verify the model represents the documented response shape.