Openapi interceptor does generate spec for Conditional Update

[Richard-de-Vries]

Description
The issue is that when a @ConditionalUrlParam is defined on a Update, this is not reflected in the OpenApi/Swagger documentation.

To Reproduce
Steps to reproduce the behavior:

1. Create a Provider with an @update that has the @ConditionalUrlParam present on the method parameters.
2. Create a ServletRegistrationBean with the provider and the OpenApiInterceptor.
3. Look at the swagger-ui documentation page, an observe that no endpoint for the conditional update is created on the documentation page.

Expected behavior
I would expect that a new Put path is generated on the Base of the resource, on which the documentation for the conditional update can be added.

Environment (please complete the following information):

• HAPI FHIR: 7.0.2
• OS: Linux
• Browser: Firefox