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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_target_args(self, alias):
 """Returns a list of FunctionArgs for the specified target_type."""

    target_types = list(self._buildfile_aliases.target_types_by_alias.get(alias))
    if not target_types:
      raise TaskError('No such target type: {}'.format(alias))
    return self.get_args_for_target_type(target_types[0])