anchor.diff:  3. Fetch static OpenAPI file
   4. Process annotations
   5. Filter model via OASFilter
  -
  -==== Validation
  -
  -The MP OpenAPI 1.0 specification does not mandate vendors to validate the resulting
  -OpenAPI v3 model (after processing the 5 steps previously mentioned), which means
  -that the behavior of invalid models is vendor specific (i.e. vendors may choose to
  -ignore, reject, or pass-through invalid inputs).
  -
   
   **Example processing**:
   
  
positive.code: @Path("/user")
  @Operation(summary = "Create user",
             description = "This can only be done by the logged in user.")
  public Response methodWithRequestBodyAndTwoParameters(
            @RequestBody(description = "Created user object", required = true,
                         content = @Content(
                         schema = @Schema(implementation = User.class))) User user,
            @QueryParam("name") String name, @QueryParam("code") String code)
            { ... }
  ----
  
negative.code:             description = "definition server 1",
              url = "http://definition1",
              variables = {
                  @ServerVariable(name = "var1",
                                  description = "var 1",
                                  defaultValue = "1",
                                  enumeration = {"1", "2"}),
                  @ServerVariable(name = "var2",
                                  description = "var 2",
                                  defaultValue = "1",
                                  enumeration = {"1", "2"})})})
  @Server(
      description = "class server 1",
      url = "http://class1",
      variables = {
              @ServerVariable(
                        name = "var1",
                        description = "var 1",
                        defaultValue = "1",
                        enumeration = {"1", "2"}),
              @ServerVariable(
                        name = "var2",
                        description = "var 2",
                        defaultValue = "1",
                        enumeration = {"1", "2"})})
  @Server(
      description = "class server 2",
      url = "http://class2",
      variables = {
              @ServerVariable(
                         name = "var1",
                         description = "var 1",
                         defaultValue = "1",
                         enumeration = {"1", "2"})})
  public class ServersResource {
  
      @GET
      @Path("/")
      @Server(
          description = "method server 1",
          url = "http://method1",
          variables = {
              @ServerVariable(
                        name = "var1",
                        description = "var 1",
                        defaultValue = "1",
                        enumeration = {"1", "2"})})
      @Server(
          description = "method server 2",
          url = "http://method2"
      )
      public Response getServers() {
          return Response.ok().entity("ok").build();
      }
  