void save(SaveState saveState) {
		saveState.putBoolean(FILTER_DUPLICATES_KEY, filterDuplicates);
		saveState.putBoolean(FILTER_REFERENCES_KEY, filterReferences);
		saveState.putBoolean(FILTER_THUNKS_KEY, filterThunks);
		saveState.putBoolean(SHOW_NAMESPACE_KEY, showNamespace);
		saveState.putInt(RECURSE_DEPTH_KEY, recurseDepth);
	}
Settings for the {@link CallTreePlugin}.  This class is immutable.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/calltree/CallTreeOptions.java