[aspnetcore] server generation in aspnetcore assigns wrong value to exampleJson

Description

Using aspnetcore code gen on the Swagger API specified below assigns wrong value to exampleJson in DefaultApi.cs. This is cut down as far as I can to show just the problem. This is a problem because I was planning to use this value in testing / demo code. (Yes, it can be hand-edited but that defeats the purpose of code gen and the real version is much larger.)

Here is the Example Value / Model output, which is correct:

{
"aa_list": [
{
"list": [
{
"aa_position": 0
},
{
"aa_position": 1
}
]
}
]
}

Here is the corresponding JSON example in the aspnetcore code:

        exampleJson = "{\n  \"aa_list\" : [ {\n    \"list\" : [ {\n      \"aa_position\" : 0\n    }, {\n      \"aa_position\" : 1\n    } ]\n  }, {\n    \"list\" : [ {\n      \"aa_position\" : 0\n    }, {\n      \"aa_position\" : 1\n    } ]\n  } ]\n}";

The aspnetcore code has the "list" member and its entire contents duplicated.

Swagger-codegen version

SwaggerHub (app.swaggerhub.com)

Swagger declaration file content or url

https://app.swaggerhub.com/apis/JohnBoncek/ArrayProblemRepro/1

Command line used for generation

No command line.

Steps to reproduce

In SwaggerHub at the above URL, choose Export > Server Stub > aspnetcore and examine the generated code in src\IO.Swagger\Controllers\DefaultApi.cs.

Related issues/PRs

None known.

Suggest a fix/enhancement

Generate the correct code.

Reproduce the SwaggerHub Export > Server Stub > aspnetcore result and inspect src\IO.Swagger\Controllers\DefaultApi.cs, focusing on the duplicated list in exampleJson. Compare the generated JSON with the example/model output from the linked Swagger declaration; done means the list appears once with the expected contents.