def title_translations2marc(self, key, value):
    """Populate the ``242`` MARC field."""
    return {
        'a': value.get('title'),
        'b': value.get('subtitle'),
        '9': value.get('source'),
    }
def title_translations2marc ( self , key , value ) : return { 'a' : value . get ( 'title' ) , 'b' : value . get ( 'subtitle' ) , '9' : value . get ( 'source' ) , }
Populate the ``242`` MARC field.