`deserialize/serialize` is not called on `withRelated` attributes

[hofp37]

// testRepository
...
    relatedAttribute: {
      type: 'relation',
      targetModel: () => modylekModel,
      relation: bookshelfRelation.createHasMany({
        foreignKey: 'testId',
      }),
    },

export const modylekModel = createModel<Modylek>({
    collectionName: 'modylek',
    adapter: getKnex,
    attributes: {
        id: { type: 'string' },
        testId: { type: 'string' },
        count: {
            type: 'number',
            deserialize: x => (x ? Number(x) : 0),
        },
    }
})

const t = await testRepository.detail({ id: '1'}, { withRelated: ['relatedAttribute'] })
// t.relatedAttribute
// { id: '1', testId: '1', count: '2' }

As a workaround had to create a repository instead just having a model