at com.wordnik.swagger.codegen.examples.XmlExampleGenerator.modelImplToXml(XmlExampleGenerator.java:76)... those four lines repeated a lof of times. I suspect that the code gets lost trying to ...

As a last resort, it may be possible to break the cycle automatically by setting spring.main.allow-circular-references to true. Created a new application from Spring Initilizr using Maven, Java, ...