ThreadGroupReferenceProxyImpl () { DebuggerManagerThreadImpl.assertIsManagerThread(); checkValid(); if (myThreadGroupProxy == null) { ThreadGroupReference threadGroupRef; try { threadGroupRef = getThreadReference().threadGroup(); } catch (ObjectCollectedException ignored) { threadGroupRef = null; } myThreadGroupProxy = getVirtualMachineProxy().getThreadGroupReferenceProxy(threadGroupRef); } return myThreadGroupProxy; }