public Task <Result> Execute(CommandMetadata metadata, double value, string from)
            {
                Converter fromConverter = ParentPlugin.FindConverter(from);

                if (fromConverter != null)
                {
                    Converter toConverter = ParentPlugin.FindRandomOfType(fromConverter.Type, fromConverter);
                    return(Execute(metadata, value, from, toConverter.Name)); // don't question it.
                }
                else
                {
                    throw new InvalidOperationException("Cannot convert from unit type " + from);
                }
            }