@Test
public void getExecutionVariablesTest3() {

    // variables and overloadedVariables merge
    Map<String, String> executionVariables = CommandExecution.getExecutionVariables(ImmutableMap.of("a", "1", "b", "2"),
                                                                                    new CommandExecution(command, 1, 0, null, ImmutableMap.of("c", "3")));
    assertEquals(ImmutableMap.of("a", "1", "b", "2",  "c", "3"), executionVariables);
}