private Program findOtherProgram(Program program, String suffix) {
		AutoAnalysisManager manager = AutoAnalysisManager.getAnalysisManager(program);
		ProgramManager programManager = manager.getAnalysisTool().getService(ProgramManager.class);
		Program[] openPrograms = programManager.getAllOpenPrograms();
		for (Program otherProgram : openPrograms) {
			if (program != otherProgram) {
				if (otherProgram.getName().startsWith(program.getName()) &&
					otherProgram.getName().endsWith(suffix)) {
					return otherProgram;
				}
			}
		}
		return null;// not using a 2nd program
	}
This method allows for EXT4 files larger than 2GB to be imported as 2 (or 3) separate programs.
Then if both programs are opened (and have the same base name), then both will be analyzed.
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/ext4/NewExt4Analyzer.java