class-transformer Type @Type(() =>) doesn't work with interfaces?

[tranquil kestrel]

export class CreateShippingDto {
    @IsArray()
    @ValidateNested({ each: true })
    @Type(() => MasterOrderSelecteds)
    orderlines: MasterOrderSelecteds[];
}

MasterOrderSelecteds is a custom interface and doesn't work with Type ?

[ornate laurel]

nop
interfaces doens't exists at runtime
that's a typescript behavior