@Override
			public void modifyLatest(ProgramDB program) {
				try {
					SymbolTable symtab = program.getSymbolTable();
					Namespace ns;
					ns = symtab.createNameSpace(program.getGlobalNamespace(), "NewLatestNamespace",
						SourceType.USER_DEFINED);
					symtab.createLabel(addr(program, "0x1001004"), "popcorn", ns,
						SourceType.USER_DEFINED);
					ns = symtab.createNameSpace(program.getGlobalNamespace(), "NewSameNamespace",
						SourceType.USER_DEFINED);
				}
				catch (Exception e) {
					Assert.fail(e.getMessage());
				}
			}
Test the merge of the versioned program's symbols in the listing.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/merge/listing/SymbolMergeManagerNamespace1Test.java