@Override
			public void modifyLatest(ProgramDB program) {
				try {
					latest_Parm1[0] =
						new MyParameter("apple", 4, new ByteDataType(), 0x14, program);
					latest_Parm2[0] =
						new MyParameter("banana", 5, new WordDataType(), 0x20, program);

					Function func = getFunction(program, "0x1003ac0");
					func.setCustomVariableStorage(true);
					func.addParameter(latest_Parm1[0], SourceType.USER_DEFINED);
					func.addParameter(latest_Parm2[0], SourceType.USER_DEFINED);

					func = getFunction(program, "0x1004c1d");
					func.setCustomVariableStorage(true);
					Parameter p0 = func.getParameter(0);
					p0.setName("DonaldDuck", SourceType.USER_DEFINED);
				}
				catch (Exception e) {
					e.printStackTrace();
					Assert.fail(e.getMessage());
				}
			}
Test the merge of the versioned program's listing.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/merge/listing/FunctionMergeManager2Test.java