computeExceptionTypes(basicBlock, (TypeFrame) result);
ExceptionSet exceptionSet = computeExceptionTypes(basicBlock, (TypeFrame) result).duplicate();
	public void endTransfer(BasicBlock basicBlock, InstructionHandle end, Object result) throws DataflowAnalysisException {		// Figure out what exceptions can be thrown out		// of the basic block.  That way, we'll remember		// exactly what kinds of exceptions can		// be caught later on.		if (basicBlock.isExceptionThrower()) {			try {				computeExceptionTypes(basicBlock, (TypeFrame) result);			} catch (ClassNotFoundException e) {				lookupFailureCallback.reportMissingClass(e);				throw new DataflowAnalysisException("Could not enumerate exception types for block", e);			}		}	}