Feature Request/Discussion: Golang string types for discriminator

[delaneyj]

A definition of

 "foo": {
      "discriminator": "type",
      "mapping": {
        "a": {
          "properties": {}
        },
        "b": {
          "properties": {}
        },
        "c": {
          "properties": {}
        }
      }
    }

Generates a Go struct of

type Foo struct {
	Type string

	A FooA

	B FooB

	C FooC
}

Where it should be more acccurately be the same as an enum and look more like...

type FooTypeDiscriminator string

const (
	FooTypeDiscriminatorA FooTypeDiscriminator = "a"

	FooTypeDiscriminatorB FooTypeDiscriminator = "b"

	FooTypeDiscriminatorC FooTypeDiscriminator = "c"
)

type Foo struct {
	FooTypeDiscriminator string

	A FooA

	B FooB

	C FooC
}

This would improve auto-completion and validation.