private ImmutableList<InputStream> getAvailableStreams() throws IOException { ImmutableSet<YangModuleInfo> moduleInfos = ImmutableSet.copyOf(sourceIdentifierToModuleInfo.values()); ImmutableList.Builder<InputStream> sourceStreams = ImmutableList.<InputStream> builder(); for (YangModuleInfo moduleInfo : moduleInfos) { sourceStreams.add(moduleInfo.getModuleSourceStream()); } return sourceStreams.build(); }