code: protected void init() {
          if (defaults) {
              initializeDefaults();
              return;
          }
          mapfx(cfgMap, new MapFunction<String, String>() {
              @Override
              public void apply(String name, String value) {
                  processSetting(name, value);
              }
          });
          readComplete();
      }
docs: Initializes the configuration instance. The
  {@link Configuration#processSetting(String, String) processSetting}
  method will be invoked for each setting, or {@link #initializeDefaults()
  initializeDefaults} if defaults are being used.