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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 get_command(self, ctx, cmd_name):
 """Override to handle command aliases"""

        rv = click.Group.get_command(self, ctx, cmd_name)
        if rv is not None:
            return rv
        cmd_name = self.command_aliases.get(cmd_name, "")
        return click.Group.get_command(self, ctx, cmd_name)