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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 import_family(self, rfa_file):
 """Append a import family entry to the journal. This instructs Revit to import a family into the opened model. Args: rfa_file (str):
 full path of the family file """

        self._add_entry(templates.IMPORT_FAMILY
                                 .format(family_file=rfa_file))