protected void checkNoCommentDifference() throws Exception {
		programDiff = new ProgramDiff(p1, p2);
		programDiff.setFilter(new ProgramDiffFilter(ProgramDiffFilter.COMMENT_DIFFS));
		AddressSet as = new AddressSet();
		AddressSetView diffAs = programDiff.getDifferences(programDiff.getFilter(), null);
		assertEquals(as, diffAs);
	}
Generate address from parsed string within specified program.
@param program target program
@param addrString address string (w/ optional space name) to be parsed
@return addressor null if parse fails
Ghidra/Features/Base/src/test.slow/java/ghidra/program/util/AbstractProgramDiffTest.java