static Either <TypeCastFailedStatus, Type> GetTypeValidity(string typeName)
{
lock (sync)
{
var type = Option <Type> .None;
(sessionDataTypeValid, type) = sessionDataTypeValid.FindOrAdd(typeName, () => GetTypeFromName(typeName));
return(type.IsSome
? Right <TypeCastFailedStatus, Type>((Type)type)
: Left <TypeCastFailedStatus, Type>(TypeCastFailedStatus.TypeInvalid));
}
}