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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 version(self, context=None):
 """Returns the version of the specified binary tool. If replaces_scope and replaces_name are defined, then the caller must pass in a context, otherwise no context should be passed. # TODO: Once we're migrated, get rid of the context arg. :API: public """

    if self.replaces_scope and self.replaces_name:
      if context:
        # If the old option is provided explicitly, let it take precedence.
        old_opts = context.options.for_scope(self.replaces_scope)
        if old_opts.get(self.replaces_name) and not old_opts.is_default(self.replaces_name):
          return old_opts.get(self.replaces_name)
      else:
        logger.warn('Cannot resolve version of {} from deprecated option {} in scope {} without a '
                    'context!'.format(self._get_name(), self.replaces_name, self.replaces_scope))
    return self.get_options().version