}
    };
  }

  private static ImmutableGraph<Character> createSingleRootGraph() {
    MutableGraph<Character> graph = GraphBuilder.directed().build();
    graph.addNode('a');
    return ImmutableGraph.copyOf(graph);
  }

  private static void assertEqualCharNodes(Iterable<Character> result, String expectedCharacters) {
    assertThat(result)

HSPLokhttp3/internal/http2/Huffman$Node;-><init>()V
HSPLokhttp3/internal/http2/Huffman$Node;-><init>(II)V
HSPLokhttp3/internal/http2/Huffman;-><clinit>()V
HSPLokhttp3/internal/http2/Huffman;-><init>()V
HSPLokhttp3/internal/http2/Huffman;->addCode(III)V
HSPLokhttp3/internal/http2/PushObserver$Companion$PushObserverCancel;-><init>()V
HSPLokhttp3/internal/http2/PushObserver;-><clinit>()V
HSPLokhttp3/internal/http2/Settings;-><init>()V