code: @Override
      public String getAWSSecretKey() {
          String aWSSecretKey = configInstance.getStringProperty(
                  namespace + "awsSecretKey", null).get();
  
          if (null != aWSSecretKey) {
              return aWSSecretKey.trim();
          } else {
              return null;
          }
      }
docs: /*
  (non-Javadoc)
  
  @see com.netflix.eureka.EurekaServerConfig#getAWSAccessId()