interface GeminiAPIConfigHow to handle the Google Search tool, since the name (and format) of the tool changes between Gemini 1.5 and Gemini 2.0. true - Change based on the model version. (Default) false - Do not change the tool name provided string value - Use this as the attribute name for the search tool, adapting any tool attributes if possible. When the model is created, a "true" or default setting will be changed to a string based on the model.