JDI:
------------------------------------------
start:
	Thread -> CREATE
	DebugTarget -> CREATE
	DebugTarget -> RESUME - CLIENT_REQUEST

on breakpoint:
	Thread -> CHANGE - CONTENT ??
	Thread -> SUSPEND - BREAKPOINT
	
Descent:
------------------------------------------
start:
	DebugTarget -> CREATE
	
on breakpoint:
	Thread -> SUSPEND - BREAKPOINT

Thread - RESUME - STEP_OVER
Thread - SUSPEND - STEP_END