synchronized public AddressSetView getRestrictedAddressSet() {
		return restrictAddressSet;
	}
Get the address set that the getDifferences method results are restricted to.
null indicates no current restrictions.
The addresses in the returned address set are derived from program1.
@return restricted address set
Ghidra/Features/Base/src/main/java/ghidra/program/util/ProgramDiff.java