public void merge(BitGroup bitGroup) {
		values.addAll(bitGroup.values);
		mask = mask | bitGroup.mask;
	}
Merges the given BitGroup into the group.  All of its values will be added to this
group's values and the masks will be or'ed together.
@param bitGroup the BitGroup to merge into this one.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/BitGroup.java