static String getUniqueTreeName(Program program, String baseName) {
		Listing currentListing = program.getListing();
		if (currentListing.getRootModule(baseName) == null) {
			return baseName;
		}
		int oneUpNumber = 0;
		String userName = SystemUtilities.getUserName();
		baseName = baseName + "." + userName;
		String name = baseName;
		while (true) {
			if (currentListing.getRootModule(name) == null) {
				return name;
			}
			++oneUpNumber;
			name = baseName + oneUpNumber;
		}
	}
For JUnit testing only, set the option for resolving a conflict.
@param option
Ghidra/Features/Base/src/main/java/ghidra/app/merge/tree/ProgramTreeMergeManager.java