def __init__(self, dates=None, location=None, company=None, title=None, slugs=None, previously=None, **kwargs):
    self.dates = dates
    self.location = location
    self.company = company
    self.title = title
    self.slugs = slugs
    self.history = History(previously=previously).to_dict()
def __init__(self, dates=None, location=None, company=None, title=None, slugs=None, previously=None, **kwargs):
    self.dates = dates
    self.location = location
    self.company = company
    self.title = title
    self.slugs = slugs
    self.history = History(previously=previously).to_dict()