<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _format_dict(self, info_dict):
 """Replaces empty content with 'NA's"""

        for key, value in info_dict.items():
            if not value:
                info_dict[key] = "NA"
        return info_dict