EntityHydrator

import { Injectable } from '@nestjs/common';import { ID, RequestContext, EntityHydrator, ProductVariantService } from '@vendure/core';@Injectable()export class MyService {  constructor(     private entityHydrator: EntityHydrator, // [!code highlight]     private productVariantService: ProductVariantService,  ) {}  myMethod(ctx: RequestContext, variantId: ID) {    const product = await this.productVariantService      .getProductForVariant(ctx, variantId);    // at this stage, we don't know which of the Product relations    // will be joined at runtime.    await this.entityHydrator // [!code highlight]      .hydrate(ctx, product, { relations: ['facetValues.facet' ]}); // [!code highlight]    // You can be sure now that the `facetValues` & `facetValues.facet` relations are populated // [!code highlight]  }}

const customer = await this.customerService  .findOne(ctx, id);await this.entityHydrator  .hydrate(ctx, customer, { relations: ['customFields.avatar' ]});

class EntityHydrator {    constructor(connection: TransactionalConnection, productPriceApplicator: ProductPriceApplicator, translator: TranslatorService)    hydrate(ctx: RequestContext, target: Entity, options: HydrateOptions<Entity>) => Promise<Entity>;}