code: public void setup(PlatformConfiguration config, Environment env) {
          this.configuration = Preconditions.checkNotNull(config, "Configuration cannot be null.");
          this.environment = Preconditions.checkNotNull(env, "Environment cannot be null.");
      }
docs: Called when the configuration and environment come into scope.
  
  @param config Provided by Dropwizard.
  @param env    Provided by Dropwizard.