spring-boot-cxf-jaxrs vs spring-boot-cxf-jaxrs-xml

curl "http://spring-boot-cxf-jaxrs-llowinge.apps.foo43ga.openshift-aws.rhocf-dev.com/services/helloservice/openapi.json"
{
  "openapi" : "3.0.1",
  "info" : {
    "title" : "Spring Boot CXF REST Application",
    "description" : "This sample project demonstrates how to use CXF JAX-RS services with Spring Boot.",
    "contact" : {
      "name" : "Red Hat FUSE"
    },
    "license" : {
      "name" : "Apache 2.0 License",
      "url" : "http://www.apache.org/licenses/LICENSE-2.0.html"
    },
    "version" : "1.0.0"
  },
  "servers" : [ {
    "url" : "http://spring-boot-cxf-jaxrs-llowinge.apps.foo43ga.openshift-aws.rhocf-dev.com/services/helloservice"
  } ],
  "paths" : {
    "/sayHello/{a}" : {
      "get" : {
        "operationId" : "sayHello_1",
        "parameters" : [ {
          "name" : "a",
          "in" : "path",
          "required" : true,
          "schema" : {
            "type" : "string"
          }
        } ],
        "responses" : {
          "default" : {
            "description" : "default response",
            "content" : {
              "text/plain" : {
                "schema" : {
                  "type" : "string"
                }
              }
            }
          }
        }
      }
    },
    "/sayHello" : {
      "get" : {
        "operationId" : "welcome_1",
        "responses" : {
          "default" : {
            "description" : "default response",
            "content" : {
              "text/plain" : {
                "schema" : {
                  "type" : "string"
                }
              }
            }
          }
        }
      }
    }
  }
}%

curl "http://spring-boot-cxf-jaxrs-llowinge.apps.foo43ga.openshift-aws.rhocf-dev.com/services/helloservice/swagger.json"

curl "http://spring-boot-cxf-jaxrs-xml-llowinge.apps.foo43ga.openshift-aws.rhocf-dev.com/services/helloservice/swagger.json"
{"swagger":"2.0","info":{"license":{"name":"Apache 2.0 License","url":"http://www.apache.org/licenses/LICENSE-2.0.html"}},"basePath":"/services/helloservice","tags":[{"name":"sayHello"}],"paths":{"/sayHello/{a}":{"get":{"tags":["sayHello"],"operationId":"sayHello","produces":["text/plain"],"parameters":[{"name":"a","in":"path","required":true,"type":"string"}],"responses":{"200":{"description":"successful operation","schema":{"type":"string"},"headers":{}}}}},"/sayHello":{"get":{"tags":["sayHello"],"operationId":"welcome","produces":["text/plain"],"parameters":[],"responses":{"200":{"description":"successful operation","schema":{"type":"string"},"headers":{}}}}}}}%

curl "http://spring-boot-cxf-jaxrs-xml-llowinge.apps.foo43ga.openshift-aws.rhocf-dev.com/services/helloservice/openapi.json"