public System.Type FindOrCreateNativeFromTupleType(TupleType tupleType)
{
System.Type nativeType;
if (!_tupleToNative.TryGetValue(tupleType, out nativeType))
{
nativeType = NativeFromTupleType(tupleType);
_tupleToNative.Add(tupleType, nativeType);
}
return nativeType;
}