faker k8s.IntOrString, go invalid result back

[howieyuen]

type IntOrString struct {
	Type   Type   `protobuf:"varint,1,opt,name=type,casttype=Type"`
	IntVal int32  `protobuf:"varint,2,opt,name=intVal"`
	StrVal string `protobuf:"bytes,3,opt,name=strVal"`
}

// Type represents the stored type of IntOrString.
type Type int64

const (
	Int    Type = iota // The IntOrString holds an int.
	String             // The IntOrString holds a string.
)

faker.FakeData will fill Type with a int64 value, but Type is an alias of int64, only 0 and 1 is accepted, what can I do with this issue?