code: public String getAccessKey() {
  		String accessKey = getAsNullableString("access_key");
  		accessKey = accessKey != null ? accessKey : getAsNullableString("client_key");
  		return accessKey;
  	}
docs: Gets the application secret key. The value can be stored in parameters
  "access_key", "client_key" or "secret_key".
  
  @return the application secret key.