@business_date.setter<EOL><INDENT>def business_date(self, business_date):<DEDENT>
if business_date is not None:<EOL><INDENT>if isinstance(business_date, type_check):<EOL><INDENT>self._business_date = parse(business_date).date()<EOL><DEDENT>else:<EOL><INDENT>self._business_date = business_date<EOL><DEDENT><DEDENT>
Force the business_date to always be a date
:param business_date:
:return: