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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def launchInternalProcess(self, pchBinaryPath, pchArguments, pchWorkingDirectory):
 """ Starts a subprocess within the calling application. This suppresses all application transition UI and automatically identifies the new executable as part of the same application. On success the calling process should exit immediately. If working directory is NULL or "" the directory portion of the binary path will be the working directory. """


        fn = self.function_table.launchInternalProcess
        result = fn(pchBinaryPath, pchArguments, pchWorkingDirectory)
        return result