Lists the secrets in the project.
The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).
The callback for this method is defined as:
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'err' has 2 properties which hold detailed information:
This method lists the secrets in the Google Cloud project selected by GoogleProjectId.
Calling this method will fire the SecretList event once for each secret, and will also populate the Secret* properties.
If there are still more secrets available to list when this method returns, the SecretMarker property will be populated. Continue to call this method until SecretMarker is empty to accumulate all pages of results in the Secret* properties.
The MaxSecrets configuration setting can be used to control the maximum number of results to return at once.