This application is a generalized test program for service brokers. It runs rest calls against the defined service broker and checks if it behaves as expected to the service broker API specification. Tests are created dynamically based upon the service broker catalog or custom input by the operator.
ServiceMetadata in the response has the field "listing" of the type string. https://github.com/evoila/osb-checker-kotlin/blob/master/src/main/kotlin/de/evoila/osb/checker/response/catalog/ServiceMetadata.kt The type of the listing is not specified in the osbapi documentation and therefore can be of other types (in the catalog example of the osbapi listing is of type object). https://github.com/openservicebrokerapi/servicebroker/blob/v2.15/spec.md#catalog-management