Nested classes introduce invalid $ref values

[WhitWaldo]

VERSION:

5.0.0-rc2

STEPS TO REPRODUCE:

Create a class within a class such as the following:

public class OuterClass {
  public class InnerClass { }
}

Within the controller, have a method such as the following that accepts the inner class as a parameter:

public async Task<ActionResult> DoSomething(Guid id, string something, [FromBody]OuterClass.InnerClass) {
  //Something
  return Ok();
}

The swagger output (looking at the OpenApi 3.0.1 output) when pasted into https://editor.swagger.io/ will generally work great, but the above will show an error of "$ref values must be RFC3986-compliant percent-encoded URIs"

Specifically, the output in offending line will read:

$ref: '#/Api-v1-Controllers-Api-DoSomething+InnerClass

Notably, it's the '+' that's throwing the error - changing this to a '-' resolves it without issue.

EXPECTED RESULT:

I'd expect to see an RFC3986-compliant value in each generated $ref value, specifically one without a '+' in it.

ACTUAL RESULT:

$ref: '#/Api-v1-Controllers-Api-DoSomething+InnerClass

ADDITIONAL DETAILS

Nothing else comes to mind, but happy to answer any questions as you have them.

[aherrick]

I'm seeing the + as well.

[Soundman32]

This is still happened as of version 6.2.3

Azure APIM is rejecting the generated open API due to this issue.