MightyLittleGeodesy.Positions.RT90Position.GetProjectionString C# (CSharp) Method

        private string GetProjectionString(RT90Projection projection)
        {
            string retVal = string.Empty;
            switch (projection)
            {
                case RT90Projection.rt90_7_5_gon_v:
                    retVal = "rt90_7.5_gon_v";
                    break;
                case RT90Projection.rt90_5_0_gon_v:
                    retVal = "rt90_5.0_gon_v";
                    break;
                case RT90Projection.rt90_2_5_gon_v:
                    retVal = "rt90_2.5_gon_v";
                    break;
                case RT90Projection.rt90_0_0_gon_v:
                    retVal = "rt90_0.0_gon_v";
                    break;
                case RT90Projection.rt90_2_5_gon_o:
                    retVal = "rt90_2.5_gon_o";
                    break;
                case RT90Projection.rt90_5_0_gon_o:
                    retVal = "rt90_5.0_gon_o";
                    break;
                default:
                    retVal = "rt90_2.5_gon_v";
                    break;
            }

            return retVal;
        }