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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 command(self, function=None, prefix=None, unobserved=False):
 """ Decorator to define a new command for this Ingredient or Experiment. The name of the command will be the name of the function. It can be called from the command-line or by using the run_command function. Commands are automatically also captured functions. The command can be given a prefix, to restrict its configuration space to a subtree. (see ``capture`` for more information) A command can be made unobserved (i.e. ignoring all observers) by passing the unobserved=True keyword argument. """

        captured_f = self.capture(function, prefix=prefix)
        captured_f.unobserved = unobserved
        self.commands[function.__name__] = captured_f
        return captured_f