DoTry and DoCatch block does not work in YAML DSL

The DoTry and DoCatch block does not work and this is an important feature for us to catch errors and process. 

 Is there an existing example which works ? Not sure if the syntax is missing anything but its not working as per specs. 

Any working example or logic will help analyze. This may relate to the same issue as below. 

    https://github.com/apache/camel-karavan/issues/401

Example Snippet which does not work under Quarkus and Spring Boot is as follows. We are using Karavan for citizen development. 

                - doTry:
                    steps:
                      - to:
                          uri: rest:post:example:startProcess
                          parameters:
                            host: localhost:8081
                            bindingMode: auto
                            producerComponentName: http
                    doCatch:
                      - steps:
                          - log:
                              message: Exception while calling the process \n${body}
                              loggingLevel: ERROR
                        exception:
                          - java.lang.Exception.class
                          - Exception.class
 

Please  help.