use crate::db::{BillingCustomerId, UserId};use sea_orm::entity::prelude::*; /// A billing customer.#[derive(Clone, Debug, Default, PartialEq, Eq, DeriveEntityModel)]#[sea_orm(table_name = "billing_customers")]pub struct Model {    #[sea_orm(primary_key)]    pub id: BillingCustomerId,    pub user_id: UserId,    pub stripe_customer_id: String,    pub has_overdue_invoices: bool,    pub created_at: DateTime,} #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]pub enum Relation {    #[sea_orm(        belongs_to = "super::user::Entity",        from = "Column::UserId",        to = "super::user::Column::Id"    )]    User,    #[sea_orm(has_many = "super::billing_subscription::Entity")]    BillingSubscription,} impl Related<super::user::Entity> for Entity {    fn to() -> RelationDef {        Relation::User.def()    }} impl Related<super::billing_subscription::Entity> for Entity {    fn to() -> RelationDef {        Relation::BillingSubscription.def()    }} impl ActiveModelBehavior for ActiveModel {}