How to remove extra return tags added by Soapcore?

Question

When using Soapcore no . NET Core 3.1 to incorporate SOAP behavior in my application everything happens as expected, with the exception of the return of two extra tags that inherit the service name and operation added "Response" and "Return" at the end, as can be seen in the image.

  <GenerateTokenResult>
   <generateTokenResponse>

I have tested some things as suggested in this other post but to no avail.