[BUG] [Typescript Axios] pingRaw is not a function

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• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
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• What's the actual output vs expected output?
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Description

Whe I call a generated function ping it throws an error that says this.pingRaw is not a function

openapi-generator version

6.0.1

The error:

TypeError: this.pingRaw is not a function
    at Object.eval (PingApi.js?23ef:49:1)
    at Generator.next (<anonymous>)
    at eval (PingApi.js?23ef:20:1)
    at new Promise (<anonymous>)
    at __awaiter (PingApi.js?23ef:16:1)
    at Object.ping [as queryFn] (PingApi.js?23ef:48:1)
    at Object.fetchFn [as fn] (index.production.js?491d:21:9818)
    at d (index.production.js?491d:21:5170)
    at eval (index.production.js?491d:21:5510)

Start by reproducing the generated TypeScript Axios client and inspect PingApi.js around the ping method shown in the stack trace, including how pingRaw is expected to be exposed. The issue does not include the OpenAPI specification, generator command, or a test location, so those details must be obtained before defining and verifying the fix.