EnumStringType.swift

struct BestEnumRaw: ExpressibleByStringLiteral{
    let rawString:String?
    
    init(){
        rawString = nil
    }
    
    init(stringLiteral value: String){
        rawString = value
    }
    init(extendedGraphemeClusterLiteral value: String){
        rawString = value
    }
    init(unicodeScalarLiteral value: String){
        rawString = value
    }
}