假設(shè)我有 3 個結(jié)構(gòu)，格式如下type Employee struct {  Id int  Name string  CompanyId int `gorm:"column:companyId"`  Company Company `gorm:"foreignKey:CompanyId"`}type Company struct {  Id int  CompanyName string  OwnerId `gorm:"column:owner"`  Owner Owner `gorm:"foreignKey:OwnerId"`}type Owner struct {  Id int  Name string  Age int  Email string}func (E Employee) GetAllEmployees() ([]Employee, error) {  Employees := []Employee  db.Preload("Company").Find(&Employees)}// -- -- There response will be like[  {    id: 1    name: "codernadir"    company: {      id: 5      company_name: "Company"      owner: {        id 0        Name ""        Age 0        Email ""      }    }  }]在這里，我使用默認(rèn)值獲取 Owner 值。給定的例子是為了描述我想要達(dá)到的目標(biāo)。當(dāng)我加載員工時，我需要一種方法如何加載 Owner 結(jié)構(gòu)及其值？任何建議將不勝感激，并在此先感謝