[BUG] aspnetcore enum generation

Openapi Generator 4.3.0 using latest master branch as 20/02/2020.

I have setup the enum in openapi as:

TestEnum:
  type: integer
  enum:
    - 1
    - 2
    - 4
    - 5
  x-enum-varnames:
    - testa
    - testb
    - testc
    - testd

However, upon generation it still sets it as string type and does not assign the numeric values to the relative name

[TypeConverter(typeof(CustomEnumConverter<TestEnum>))]
[JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]
public enum TestEnum
{
    [EnumMember(Value = "1")]
    testa= 1,
    [EnumMember(Value = "2")]
    testb = 2,
    [EnumMember(Value = "4")]
    testc = 3,
    [EnumMember(Value = "5")]
    testd = 4
}

Start by reproducing the supplied OpenAPI enum schema with the aspnetcore generator and inspect the enum-generation path. Compare the generated TestEnum with the expected numeric assignments; done means numeric values 1, 2, 4, and 5 are preserved and the enum is not treated as a string.