code: public String get(ConfigKey pKey) {
          String value = globalConfig.get(pKey);
          if (value == null) {
              value = pKey.getDefaultValue();
          }
          return value;
      }
docs: Get a configuration value if set as configuration or the default
  value if not
  
  @param pKey the configuration key to lookup
  @return the configuration value or the default value if no configuration
  was given.