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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 close_plugins(self, channel):
 """Close all plugins associated with the channel."""

        opmon = channel.opmon
        for key in opmon.get_active():
            obj = opmon.get_plugin(key)
            try:
                self.gui_call(obj.close)

            except Exception as e:
                self.logger.error(
                    "Failed to continue operation: %s" % (str(e)))