@Override
	public void deleteAddressRange(Address start, Address end, TaskMonitor monitor) {
		AddressRange.checkValidRange(start, end);
		lock.acquire();
		try {
			super.deleteAddressRange(start, end, monitor);
			if (program != null) {
				program.setRegisterValuesChanged(null, start, end);
			}
		}
		finally {
			lock.release();
		}
	}
Intialize context with default values defined by pspec and cspec.
NOTE: cspec values take precedence
@param lang processor language
@param compilerSpec compiler specification
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/register/ProgramRegisterContextDB.java