code: func (b *ClientAdaptor) ReadCharacteristic(cUUID string) (data []byte, err error) {
  	if !b.connected {
  		log.Fatalf("Cannot read from BLE device until connected")
  		return
  	}
  
  	uuid, _ := blelib.Parse(cUUID)
  
  	if u := b.profile.Find(blelib.NewCharacteristic(uuid)); u != nil {
  		data, err = b.client.ReadCharacteristic(u.(*blelib.Characteristic))
  	}
  
  	return
  }
docs: // ReadCharacteristic returns bytes from the BLE device for the
  // requested characteristic uuid