@type t() ::
  %Procore.Model.RestV10ProjectsProjectIdActionPlansPlanReferencesGet200ResponseInner{
    created_at: DateTime.t() | nil,
    deleted_at: DateTime.t() | nil,
    id: integer() | nil,
    payload:
      Procore.Model.RestV10ProjectsProjectIdActionPlansPlanReferencesGet200ResponseInnerPayload.t()
      | nil,
    plan_id: integer() | nil,
    plan_item_id: integer() | nil,
    type: String.t() | nil,
    updated_at: DateTime.t() | nil
  }