protected void incrementProgress(int increment) {
		int progressRange = maxPhaseProgressPercentage - minPhaseProgressPercentage;
		changeNum += increment;
		int granularity = (totalChanges / progressRange) + 1;
		if (changeNum % granularity == 0) {
			if (totalChanges <= 0) {
				totalChanges = 1;
			}
			mergeManager.updateProgress(
				minPhaseProgressPercentage + ((changeNum * progressRange) / totalChanges));
		}
	}
Updates the progress bar associated with this phase of the merge.
Before beginning to auto-merge the <code>totalChanges</code> and <code>changeNum</code> must be set.
This method should then be called as changes are made to update the change bar.
This assumes that each change is equivalent in terms of shown progress.
@param increment the number of changes completed relative to the total
number of changes for this auto-merger.
Ghidra/Features/Base/src/main/java/ghidra/app/merge/listing/FunctionMerger.java