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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 run_cli(self, cli, args=None, node_paths=None):
 """Returns a command that when executed will run an installed cli via package manager."""

    cli_args = [cli]
    if args:
      cli_args.append('--')
      cli_args.extend(args)
    return self.run_command(args=cli_args, node_paths=node_paths)