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:SendDevToolsMessage, and optionally either a "result" (dictionary) or "error" (dictionary) value. The "error" dictionary will contain "code" (int) and "message" (string) values. Event dictionaries include a "function" (string) value and optionally a "params" (dictionary) value. See the DevTools protocol documentation at https://chromedevtools.github.io/devtools-protocol/ for details of supported function calls and the expected "result" or "params" dictionary contents. JSON dictionaries can be parsed using the CefParseJSON function if desired, however be aware of performance considerations when parsing large messages (some of which may exceed 1MB in size).