public List<CliCustomMod> getCustomMods() {
			List<CliCustomMod> customMods = new ArrayList<CliCustomMod>();
			for (CliRepresentable mod : modifiers) {
				if (mod instanceof CliCustomMod) {
					customMods.add((CliCustomMod) mod);
				}
			}

			return customMods;
		}
This is the method that subclasses should override. If stream is null, the method must not cause a NullPointerException,
i.e. it must handle this as if there was no stream to begin with.
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/pe/cli/blobs/CliAbstractSig.java