How to use the predicthq.endpoints.schemas.DictType function in predicthq

top_events = ModelType(TopEventsSearchParams)
    impact_rank = StringType(choices=('rank', 'aviation_rank'))


class ImpactDay(Model):

    date = DateType()
    count = IntType()
    impact = IntType()

    rank_levels = DictType(IntType, export_level=NONEMPTY)
    rank_levels_impact = DictType(IntType, export_level=NONEMPTY)

    aviation_rank_levels = DictType(IntType, export_level=NONEMPTY)
    aviation_rank_levels_impact = DictType(IntType, export_level=NONEMPTY)

    categories = DictType(IntType)
    categories_impact = DictType(IntType)


class ImpactResultSet(ResultSet):

    results = ResultType(ImpactDay)

class ImpactParams(SearchParams):

    top_events = ModelType(TopEventsSearchParams)
    impact_rank = StringType(choices=('rank', 'aviation_rank'))


class ImpactDay(Model):

    date = DateType()
    count = IntType()
    impact = IntType()

    rank_levels = DictType(IntType, export_level=NONEMPTY)
    rank_levels_impact = DictType(IntType, export_level=NONEMPTY)

    aviation_rank_levels = DictType(IntType, export_level=NONEMPTY)
    aviation_rank_levels_impact = DictType(IntType, export_level=NONEMPTY)

    categories = DictType(IntType)
    categories_impact = DictType(IntType)


class ImpactResultSet(ResultSet):

    results = ResultType(ImpactDay)

class ImpactDay(Model):

    date = DateType()
    count = IntType()
    impact = IntType()

    rank_levels = DictType(IntType, export_level=NONEMPTY)
    rank_levels_impact = DictType(IntType, export_level=NONEMPTY)

    aviation_rank_levels = DictType(IntType, export_level=NONEMPTY)
    aviation_rank_levels_impact = DictType(IntType, export_level=NONEMPTY)

    categories = DictType(IntType)
    categories_impact = DictType(IntType)


class ImpactResultSet(ResultSet):

    results = ResultType(ImpactDay)

limit = IntType(min_value=0, max_value=10)


class CalendarParams(SearchParams):

    top_events = ModelType(TopEventsSearchParams)


class CalendarDay(Model):

    date = DateType()
    count = IntType()
    top_rank = FloatType()
    rank_levels = DictType(IntType)
    categories = DictType(IntType)
    labels = DictType(IntType)
    top_events = ModelType(EventResultSet)


class CalendarResultSet(ResultSet):

    results = ResultType(CalendarDay)


class ImpactParams(SearchParams):

    top_events = ModelType(TopEventsSearchParams)
    impact_rank = StringType(choices=('rank', 'aviation_rank'))


class ImpactDay(Model):

class ImpactParams(SearchParams):

    top_events = ModelType(TopEventsSearchParams)
    impact_rank = StringType(choices=('rank', 'aviation_rank'))


class ImpactDay(Model):

    date = DateType()
    count = IntType()
    impact = IntType()

    rank_levels = DictType(IntType, export_level=NONEMPTY)
    rank_levels_impact = DictType(IntType, export_level=NONEMPTY)

    aviation_rank_levels = DictType(IntType, export_level=NONEMPTY)
    aviation_rank_levels_impact = DictType(IntType, export_level=NONEMPTY)

    categories = DictType(IntType)
    categories_impact = DictType(IntType)


class ImpactResultSet(ResultSet):

    results = ResultType(ImpactDay)

limit = IntType(min_value=0, max_value=10)


class CalendarParams(SearchParams):

    top_events = ModelType(TopEventsSearchParams)


class CalendarDay(Model):

    date = DateType()
    count = IntType()
    top_rank = FloatType()
    rank_levels = DictType(IntType)
    categories = DictType(IntType)
    labels = DictType(IntType)
    top_events = ModelType(EventResultSet)


class CalendarResultSet(ResultSet):

    results = ResultType(CalendarDay)


class ImpactParams(SearchParams):

    top_events = ModelType(TopEventsSearchParams)
    impact_rank = StringType(choices=('rank', 'aviation_rank'))


class ImpactDay(Model):

deleted_reason = StringType()
    duplicate_of_id = StringType()


class EventResultSet(ResultSet):

    overflow = BooleanType()

    results = ResultType(Event)


class CountResultSet(Model):

    count = IntType()
    top_rank = FloatType()
    rank_levels = DictType(IntType)
    categories = DictType(IntType)
    labels = DictType(IntType)


class TopEventsSearchParams(SortableMixin, Model):

    limit = IntType(min_value=0, max_value=10)


class CalendarParams(SearchParams):

    top_events = ModelType(TopEventsSearchParams)


class CalendarDay(Model):

results = ResultType(CalendarDay)


class ImpactParams(SearchParams):

    top_events = ModelType(TopEventsSearchParams)
    impact_rank = StringType(choices=('rank', 'aviation_rank'))


class ImpactDay(Model):

    date = DateType()
    count = IntType()
    impact = IntType()

    rank_levels = DictType(IntType, export_level=NONEMPTY)
    rank_levels_impact = DictType(IntType, export_level=NONEMPTY)

    aviation_rank_levels = DictType(IntType, export_level=NONEMPTY)
    aviation_rank_levels_impact = DictType(IntType, export_level=NONEMPTY)

    categories = DictType(IntType)
    categories_impact = DictType(IntType)


class ImpactResultSet(ResultSet):

    results = ResultType(ImpactDay)