protected void waitForPrompting(int timeoutMS) {
		int total = 0;
		while (!mergeMgr.isPromptingUser()) {

			total += sleep();
			if (total >= timeoutMS) {
				Assert.fail("Failed waiting for Prompting to start");
			}
		}
	}
Call this after executeMerge() if you expect to get a prompt from one of the merge
manager's "choose" dialogs. It will give the initial automerge a chance to occur
before you begin trying to programmatically choose buttons.
This currently waits up to 5 seconds for prompting to begin.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/merge/AbstractMergeTest.java