private void addRegisterAddresses(Register reg) {
		Address min = reg.getAddress();
		registerAddresses.add(min, min.add(reg.getNumBytes()-1));
	}
Construct RegisterManager

@param registers all defined registers with appropriate parent-child relationships properly
           established.
@param registerNameMap a complete name-to-register map including all register aliases and
           alternate spellings (e.g., case-variations)
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/lang/RegisterManager.java