func (ev *EnumVisitor) VisitEnumField(e *proto.EnumField) {
	ev.Enum.Members = append(ev.Enum.Members, Member{e.Name, "Any", nil})
}
VisitEnumField creates an enum field to the member list
package protostub
import (
	"github.com/emicklei/proto"
)
type EnumVisitor struct {
	ProtoData
	Enum Enum
}
func NewEnumVisitor() *EnumVisitor {
	return &EnumVisitor{
		ProtoData: ProtoData{},
	}
}