C# Compile Error When Using Negative Enum Values

When I input the following JSON with a negative enum value into NSwagStudio.

        "dayoffRule": {
          "format": "int32",
          "description": "Day off rule for the shift. ScheduleData.Enums.ShiftDayOffRule",
          "enum": [
            0,
            1,
            3,
            -1
          ],
          "type": "integer"
        },

I get the following invalid C#. Notice _1 is defined twice.

    [System.CodeDom.Compiler.GeneratedCode("NJsonSchema", "9.10.6.0 (Newtonsoft.Json v9.0.0.0)")]
    public enum ShiftDayoffRule
    {
        _0 = 0,

        _1 = 1,   <<<

        _3 = 3,

        _1 = -1,   <<<

    }

Is there a workaround for this?

[johnxjcheng]

@RSuter, I fixed the issue in the suggested location and created a pull request.

[RicoSuter]

Merged and nswag updated, release soon