code: @JsonIgnore
  	public Map<String, String> getCredentials() {
  		if (getId() == null) {
  			return Collections.emptyMap();
  		} else {
  			Map<String, String> keys = new LinkedHashMap<String, String>(2);
  			keys.put("accessKey", getId());
  			keys.put("secretKey", getSecret());
  			return keys;
  		}
  	}
docs: Returns the map containing the app's access key and secret key.
  @return a map of API keys (never null)