/**
* <summary>
* Immediately play a note sequence.
* <para>
* Notes are provided as text words, separated by
* spaces. The pitch is specified using the usual letter from A to G. The duration is
* specified as the divisor of a whole note: 4 for a fourth, 8 for an eight note, etc.
* Some modifiers are supported: <c>#</c> and <c>b</c> to alter a note pitch,
* <c>'</c> and <c>,</c> to move to the upper/lower octave, <c>.</c> to enlarge
* the note duration.
* </para>
* </summary>
* <param name="notes">
* notes to be played, as a text string.
* </param>
* <returns>
* <c>0</c> if the call succeeds.
* On failure, throws an exception or returns a negative error code.
* </returns>
*/
public virtual int playNotes(string notes)
{
if (_func == null)
{
throw new YoctoApiProxyException("No Buzzer connected");
}
return(_func.playNotes(notes));
}