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.AbstractBaseGraph$IncidentEdgeSet$Undirected$1 implements com.google.common.base.Function<N, com.google.common.graph.EndpointPair<N>>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected$1
  super_class: java.lang.Object
{
  final com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected this$2;
    descriptor: Lcom/google/common/graph/AbstractBaseGraph$IncidentEdgeSet$Undirected;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected);
    descriptor: (Lcom/google/common/graph/AbstractBaseGraph$IncidentEdgeSet$Undirected;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected$1 this
         0: .line 216
            aload 0 /* this */
            aload 1
            putfield com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected$1.this$2:Lcom/google/common/graph/AbstractBaseGraph$IncidentEdgeSet$Undirected;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/graph/AbstractBaseGraph$IncidentEdgeSet$Undirected$1;
    MethodParameters:
        Name  Flags
      this$0  final

  public com.google.common.graph.EndpointPair<N> apply(N);
    descriptor: (Ljava/lang/Object;)Lcom/google/common/graph/EndpointPair;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected$1 this
        start local 1 // java.lang.Object adjacentNode
         0: .line 219
            aload 0 /* this */
            getfield com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected$1.this$2:Lcom/google/common/graph/AbstractBaseGraph$IncidentEdgeSet$Undirected;
            getfield com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected.node:Ljava/lang/Object;
            aload 1 /* adjacentNode */
            invokestatic com.google.common.graph.EndpointPair.unordered:(Ljava/lang/Object;Ljava/lang/Object;)Lcom/google/common/graph/EndpointPair;
            areturn
        end local 1 // java.lang.Object adjacentNode
        end local 0 // com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected$1 this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    1     0          this  Lcom/google/common/graph/AbstractBaseGraph$IncidentEdgeSet$Undirected$1;
            0    1     1  adjacentNode  TN;
    Signature: (TN;)Lcom/google/common/graph/EndpointPair<TN;>;
    MethodParameters:
              Name  Flags
      adjacentNode  

  public java.lang.Object apply(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    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.AbstractBaseGraph$IncidentEdgeSet$Undirected$1.apply:(Ljava/lang/Object;)Lcom/google/common/graph/EndpointPair;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Lcom/google/common/base/Function<TN;Lcom/google/common/graph/EndpointPair<TN;>;>;
SourceFile: "AbstractBaseGraph.java"
EnclosingMethod: com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected.iterator:()Lcom/google/common/collect/UnmodifiableIterator;
NestHost: com.google.common.graph.AbstractBaseGraph
InnerClasses:
  private abstract IncidentEdgeSet = com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet of com.google.common.graph.AbstractBaseGraph
  private final Undirected = com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected of com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet
  com.google.common.graph.AbstractBaseGraph$IncidentEdgeSet$Undirected$1