getNextFeedbackIO is a convenience wrapper for getNextFeedback
 
    This method is a convenience wrapper with the same behavior as
    calling getNextFeedback('View', 'IO'). The 'IO' view provides
    access to the state of pins on an I/O board, the button and slider
    states from the HEBI Mobile I/O app, as well as hardware timestamps.
 
    Example
       % Read the value of pin A1
       fbk = group.getNextFeedbackIO()
       value = fbk.a1;