// Overridden from IFluidManager
        public HashSet <string> GetAvailableFluidNames()
        {
            var ret = new HashSet <string>();

            foreach (var filename in EmbeddedResource.GetResourcesOfExtension(EXT_FLUID))
            {
                if (!FLUID_COLORS_FILE.Equals(filename))
                {
                    var fluidName = Regex.Replace(filename, "\\" + EXT_FLUID, "");
                    ret.Add(fluidName);
                }
            }

            return(ret);
        }