@Test()
  public void defaultCollectorThrowsExceptionAfterFunctionThrowsFunctionException() {
    // GEODE-1762 - clients throw from execute, but peers throw from rc.getResult
    thrown.expect(FunctionException.class);
    ResultCollector rc = getExecution().execute((context) -> {
      throw new FunctionException();
    });
    final Object result = rc.getResult();
  }
Return the number of members the function is expected to execute on
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/execute/FunctionServiceBase.java