 [det]mqi_stop(?Server_Thread_ID:atom)If Server_Thread_ID is a variable, stops all Machine Query 
Interfaces and associated threads. If Server_Thread_ID is an 
atom, then only the MQI with that Server_Thread_ID is 
stopped. Server_Thread_ID can be provided or retrieved using Options 
in mqi_start/1.
[det]mqi_stop(?Server_Thread_ID:atom)If Server_Thread_ID is a variable, stops all Machine Query 
Interfaces and associated threads. If Server_Thread_ID is an 
atom, then only the MQI with that Server_Thread_ID is 
stopped. Server_Thread_ID can be provided or retrieved using Options 
in mqi_start/1.
Always succeeds.