D-BUS Example Request

My aim is to automate pairing, connecting process between Arduino and
Raspberry Pi. The temperature data will be sent from Arduino to Pi without
any human intervention. I am able to automate pairing process, however I
fail at creating connection by using D-BUS. The connection is fine if I use
deprecated tools such as rfcomm, it works also fine if I use python socket
library, however D-BUS device methods Connect and ConnectProfile always
fail. I am completely aware of examples in GitHub however I couldn't create
a working example based on them. If anyone can provide working example or
any related information where the Bluetooth connection between Arduino and
Raspberry Pi is done by python script based on D-BUS I will appreciate it.
 
Best Regards,