https://github.com/google/guava/guava: Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. 
class com.google.common.graph.Graphs$TransposedGraph<N> extends com.google.common.graph.ForwardingGraph<N>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.graph.Graphs$TransposedGraph
  super_class: com.google.common.graph.ForwardingGraph
{
  private final com.google.common.graph.Graph<N> graph;
    descriptor: Lcom/google/common/graph/Graph;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Lcom/google/common/graph/Graph<TN;>;

  void <init>(com.google.common.graph.Graph<N>);
    descriptor: (Lcom/google/common/graph/Graph;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.graph.Graphs$TransposedGraph this
        start local 1 // com.google.common.graph.Graph graph
         0: .line 267
            aload 0 /* this */
            invokespecial com.google.common.graph.ForwardingGraph.<init>:()V
         1: .line 268
            aload 0 /* this */
            aload 1 /* graph */
            putfield com.google.common.graph.Graphs$TransposedGraph.graph:Lcom/google/common/graph/Graph;
         2: .line 269
            return
        end local 1 // com.google.common.graph.Graph graph
        end local 0 // com.google.common.graph.Graphs$TransposedGraph this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    3     0   this  Lcom/google/common/graph/Graphs$TransposedGraph<TN;>;
            0    3     1  graph  Lcom/google/common/graph/Graph<TN;>;
    Signature: (Lcom/google/common/graph/Graph<TN;>;)V
    MethodParameters:
       Name  Flags
      graph  

  protected com.google.common.graph.Graph<N> delegate();
    descriptor: ()Lcom/google/common/graph/Graph;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.graph.Graphs$TransposedGraph this
         0: .line 273
            aload 0 /* this */
            getfield com.google.common.graph.Graphs$TransposedGraph.graph:Lcom/google/common/graph/Graph;
            areturn
        end local 0 // com.google.common.graph.Graphs$TransposedGraph this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/graph/Graphs$TransposedGraph<TN;>;
    Signature: ()Lcom/google/common/graph/Graph<TN;>;

  public java.util.Set<N> predecessors(N);
    descriptor: (Ljava/lang/Object;)Ljava/util/Set;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.graph.Graphs$TransposedGraph this
        start local 1 // java.lang.Object node
         0: .line 278
            aload 0 /* this */
            invokevirtual com.google.common.graph.Graphs$TransposedGraph.delegate:()Lcom/google/common/graph/Graph;
            aload 1 /* node */
            invokeinterface com.google.common.graph.Graph.successors:(Ljava/lang/Object;)Ljava/util/Set;
            areturn
        end local 1 // java.lang.Object node
        end local 0 // com.google.common.graph.Graphs$TransposedGraph this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/graph/Graphs$TransposedGraph<TN;>;
            0    1     1  node  TN;
    Signature: (TN;)Ljava/util/Set<TN;>;
    MethodParameters:
      Name  Flags
      node  

  public java.util.Set<N> successors(N);
    descriptor: (Ljava/lang/Object;)Ljava/util/Set;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.graph.Graphs$TransposedGraph this
        start local 1 // java.lang.Object node
         0: .line 283
            aload 0 /* this */
            invokevirtual com.google.common.graph.Graphs$TransposedGraph.delegate:()Lcom/google/common/graph/Graph;
            aload 1 /* node */
            invokeinterface com.google.common.graph.Graph.predecessors:(Ljava/lang/Object;)Ljava/util/Set;
            areturn
        end local 1 // java.lang.Object node
        end local 0 // com.google.common.graph.Graphs$TransposedGraph this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/graph/Graphs$TransposedGraph<TN;>;
            0    1     1  node  TN;
    Signature: (TN;)Ljava/util/Set<TN;>;
    MethodParameters:
      Name  Flags
      node  

  public int inDegree();
    descriptor: (Ljava/lang/Object;)I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.graph.Graphs$TransposedGraph this
        start local 1 // java.lang.Object node
         0: .line 288
            aload 0 /* this */
            invokevirtual com.google.common.graph.Graphs$TransposedGraph.delegate:()Lcom/google/common/graph/Graph;
            aload 1 /* node */
            invokeinterface com.google.common.graph.Graph.outDegree:(Ljava/lang/Object;)I
            ireturn
        end local 1 // java.lang.Object node
        end local 0 // com.google.common.graph.Graphs$TransposedGraph this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/graph/Graphs$TransposedGraph<TN;>;
            0    1     1  node  TN;
    Signature: (TN;)I
    MethodParameters:
      Name  Flags
      node  

  public int outDegree();
    descriptor: (Ljava/lang/Object;)I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.graph.Graphs$TransposedGraph this
        start local 1 // java.lang.Object node
         0: .line 293
            aload 0 /* this */
            invokevirtual com.google.common.graph.Graphs$TransposedGraph.delegate:()Lcom/google/common/graph/Graph;
            aload 1 /* node */
            invokeinterface com.google.common.graph.Graph.inDegree:(Ljava/lang/Object;)I
            ireturn
        end local 1 // java.lang.Object node
        end local 0 // com.google.common.graph.Graphs$TransposedGraph this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/graph/Graphs$TransposedGraph<TN;>;
            0    1     1  node  TN;
    Signature: (TN;)I
    MethodParameters:
      Name  Flags
      node  

  public boolean hasEdgeConnecting(N, );
    descriptor: (Ljava/lang/Object;Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.google.common.graph.Graphs$TransposedGraph this
        start local 1 // java.lang.Object nodeU
        start local 2 // java.lang.Object nodeV
         0: .line 298
            aload 0 /* this */
            invokevirtual com.google.common.graph.Graphs$TransposedGraph.delegate:()Lcom/google/common/graph/Graph;
            aload 2 /* nodeV */
            aload 1 /* nodeU */
            invokeinterface com.google.common.graph.Graph.hasEdgeConnecting:(Ljava/lang/Object;Ljava/lang/Object;)Z
            ireturn
        end local 2 // java.lang.Object nodeV
        end local 1 // java.lang.Object nodeU
        end local 0 // com.google.common.graph.Graphs$TransposedGraph this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lcom/google/common/graph/Graphs$TransposedGraph<TN;>;
            0    1     1  nodeU  TN;
            0    1     2  nodeV  TN;
    Signature: (TN;TN;)Z
    MethodParameters:
       Name  Flags
      nodeU  
      nodeV  

  public java.lang.Iterable predecessors(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Iterable;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast java.lang.Object
            invokevirtual com.google.common.graph.Graphs$TransposedGraph.predecessors:(Ljava/lang/Object;)Ljava/util/Set;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  protected com.google.common.graph.BaseGraph delegate();
    descriptor: ()Lcom/google/common/graph/BaseGraph;
    flags: (0x1044) ACC_PROTECTED, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual com.google.common.graph.Graphs$TransposedGraph.delegate:()Lcom/google/common/graph/Graph;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public java.lang.Iterable successors(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Iterable;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast java.lang.Object
            invokevirtual com.google.common.graph.Graphs$TransposedGraph.successors:(Ljava/lang/Object;)Ljava/util/Set;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: <N:Ljava/lang/Object;>Lcom/google/common/graph/ForwardingGraph<TN;>;
SourceFile: "Graphs.java"
NestHost: com.google.common.graph.Graphs
InnerClasses:
  private TransposedGraph = com.google.common.graph.Graphs$TransposedGraph of com.google.common.graph.Graphs