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.collect.LinkedListMultimap$KeyList<K, V>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.collect.LinkedListMultimap$KeyList
  super_class: java.lang.Object
{
  com.google.common.collect.LinkedListMultimap$Node<K, V> head;
    descriptor: Lcom/google/common/collect/LinkedListMultimap$Node;
    flags: (0x0000) 
    Signature: Lcom/google/common/collect/LinkedListMultimap$Node<TK;TV;>;

  com.google.common.collect.LinkedListMultimap$Node<K, V> tail;
    descriptor: Lcom/google/common/collect/LinkedListMultimap$Node;
    flags: (0x0000) 
    Signature: Lcom/google/common/collect/LinkedListMultimap$Node<TK;TV;>;

  int count;
    descriptor: I
    flags: (0x0000) 

  void <init>(com.google.common.collect.LinkedListMultimap$Node<K, V>);
    descriptor: (Lcom/google/common/collect/LinkedListMultimap$Node;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.LinkedListMultimap$KeyList this
        start local 1 // com.google.common.collect.LinkedListMultimap$Node firstNode
         0: .line 144
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 145
            aload 0 /* this */
            aload 1 /* firstNode */
            putfield com.google.common.collect.LinkedListMultimap$KeyList.head:Lcom/google/common/collect/LinkedListMultimap$Node;
         2: .line 146
            aload 0 /* this */
            aload 1 /* firstNode */
            putfield com.google.common.collect.LinkedListMultimap$KeyList.tail:Lcom/google/common/collect/LinkedListMultimap$Node;
         3: .line 147
            aload 1 /* firstNode */
            aconst_null
            putfield com.google.common.collect.LinkedListMultimap$Node.previousSibling:Lcom/google/common/collect/LinkedListMultimap$Node;
         4: .line 148
            aload 1 /* firstNode */
            aconst_null
            putfield com.google.common.collect.LinkedListMultimap$Node.nextSibling:Lcom/google/common/collect/LinkedListMultimap$Node;
         5: .line 149
            aload 0 /* this */
            iconst_1
            putfield com.google.common.collect.LinkedListMultimap$KeyList.count:I
         6: .line 150
            return
        end local 1 // com.google.common.collect.LinkedListMultimap$Node firstNode
        end local 0 // com.google.common.collect.LinkedListMultimap$KeyList this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    7     0       this  Lcom/google/common/collect/LinkedListMultimap$KeyList<TK;TV;>;
            0    7     1  firstNode  Lcom/google/common/collect/LinkedListMultimap$Node<TK;TV;>;
    Signature: (Lcom/google/common/collect/LinkedListMultimap$Node<TK;TV;>;)V
    MethodParameters:
           Name  Flags
      firstNode  
}
Signature: <K:Ljava/lang/Object;V:Ljava/lang/Object;>Ljava/lang/Object;
SourceFile: "LinkedListMultimap.java"
NestHost: com.google.common.collect.LinkedListMultimap
InnerClasses:
  private KeyList = com.google.common.collect.LinkedListMultimap$KeyList of com.google.common.collect.LinkedListMultimap
  private final Node = com.google.common.collect.LinkedListMultimap$Node of com.google.common.collect.LinkedListMultimap