code: public void deployApplication(String applicationName) throws IOException {
  
          final Optional<URL> defaultFileOptional = this.kubernetesAssistantDefaultResourcesLocator.locate();
  
          if (defaultFileOptional.isPresent()) {
              deployApplication(applicationName, defaultFileOptional.get());
          } else {
              log.warning("No default Kubernetes resources found at default locations.");
          }
      }
docs: Deploys application finding resources in default location in classpath. That is:
  kubernetes.(y[a]ml|json), META-INF/fabric8/kubernetes.(y[a]ml|json)
  <p>
  In this method you specify the application name.
  
  @param applicationName to configure in cluster
  @return the name of the application
  @throws IOException