"function B(){};\n" +
"A();\n";
CallGraph callgraph = compileAndRunBackward(source);
Function mainFunction = callgraph.getMainFunction();
Function functionA = callgraph.getUniqueFunctionWithName("A");
Callsite callInMain = mainFunction.getCallsitesInFunction().iterator()
.next();
UnsupportedOperationException caughtException = null;