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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 process_data(self, value):
 """ Process the Python data applied to this field and store the result. This will be called during form construction by the form's `kwargs` or `obj` argument. Converting ORM object to primary key for client form. :param value: The python object containing the value to process. """

        if value:
            if self.is_related:
                self.data = self.datamodel.get_related_interface(
                    self.col_name
                ).get_pk_value(value)
            else:
                self.data = self.datamodel.get(value)
        else:
            self.data = None