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In a synchronous method call, the return value is the method result. When a method is called asynchronously, the return value is a sequence number that can be used to correlate the eventual result to the request. This sequence number is passed as an argument to the methodResponse function in the Console interface.

It is important to realize that the methodResponse function may be invoked before the asynchronous call returns. Make sure your code is written to handle this possibility.

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