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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 drop_connection(self, name, database=None):
 """ Force server to close current client subscription connection to the server @param str name: The name of the subscription @param str database: The name of the database """

        request_executor = self._store.get_request_executor(database)
        command = DropSubscriptionConnectionCommand(name)
        request_executor.execute(command)