Plan Years
List plan years for benefit
benefit_products.plan_years.list(strbenefit_product_id, PlanYearListParams**kwargs) -> PlanYearListResponse
/v1/benefit-products/{benefit_product_id}/plan-years
Create new plan year
benefit_products.plan_years.create(strbenefit_product_id, PlanYearCreateParams**kwargs) -> PlanYear
/v1/benefit-products/{benefit_product_id}/plan-years