converting a pa.DataFrameModel into a pa.SeriesSchema? about pandera HOT 1 OPEN

class MySeriesSchema(pandera.SeriesModel):
    a: Index[int] = pandera.Field()
    b: Index[int] = pandera.Field()

    col: Series[float] = pandera.field()

class MySchemaA(pandera.DataFrameModel):
    a: Series[int] = pandera.Field()
    b: Series[int] = pandera.Field()

    @classmethod
    def slice(cls, column_name):
        schema = super().to_schema()
        column = schema.columns[column_name]
        return pandera.SeriesSchema(
            column.dtype,
            checks=column.checks,
            index=schema.index,
            nullable=column.nullable,
            unique=column.unique,
            name=column.name)