code: def button_change_send(self, time_boot_ms, last_change_ms, state, force_mavlink1=False):
                  '''
                  Report button state change
  
                  time_boot_ms              : Timestamp (milliseconds since system boot) (uint32_t)
                  last_change_ms            : Time of last change of button state (uint32_t)
                  state                     : Bitmap state of buttons (uint8_t)
  
                  '''
                  return self.send(self.button_change_encode(time_boot_ms, last_change_ms, state), force_mavlink1=force_mavlink1f button_change_send(self, time_boot_ms, last_change_ms, state, force_mavlink1=False):
                  '''
                  Report button state change
  
                  time_boot_ms              : Timestamp (milliseconds since system boot) (uint32_t)
                  last_change_ms            : Time of last change of button state (uint32_t)
                  state                     : Bitmap state of buttons (uint8_t)
  
                  '''
                  return self.send(self.button_change_encode(time_boot_ms, last_change_ms, state), force_mavlink1=force_mavlink1)
docs: Report button state change
  
                  time_boot_ms              : Timestamp (milliseconds since system boot) (uint32_t)
                  last_change_ms            : Time of last change of button state (uint32_t)
                  state                     : Bitmap state of buttons (uint8_t)