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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 help_heading(self):
 """Helper method that returns just the header. :returns: A heading object. :rtype: safe.messaging.heading.Heading """

        message = m.Heading(
            tr('Help for {step_name}').format(step_name=self.step_name),
            **SUBSECTION_STYLE)
        return message