how to get testsignal form cyton board .where i add test signal control command

code--
board_shim.prepare_session()
board_shim.config_board("x1045110X")
board_shim.config_board("x2045110X")
board_shim.config_board("x3045110X")
board_shim.config_board("x4045110X")
board_shim.config_board("x5045110X")
board_shim.config_board("x6045110X")
board_shim.config_board("x7045110X")
board_shim.config_board("x8045110X")
board_shim.start_stream(450000, args.streamer_params)
openbci sdk details--
https://docs.openbci.com/Cyton/CytonSDK/#test-signal-control-commands