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.ConsumingQueueIterator<T> extends com.google.common.collect.AbstractIterator<T>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.collect.ConsumingQueueIterator
  super_class: com.google.common.collect.AbstractIterator
{
  private final java.util.Queue<T> queue;
    descriptor: Ljava/util/Queue;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/Queue<TT;>;

  void <init>();
    descriptor: ([Ljava/lang/Object;)V
    flags: (0x0080) ACC_VARARGS
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // com.google.common.collect.ConsumingQueueIterator this
        start local 1 // java.lang.Object[] elements
         0: .line 32
            aload 0 /* this */
            invokespecial com.google.common.collect.AbstractIterator.<init>:()V
         1: .line 33
            aload 0 /* this */
            new java.util.ArrayDeque
            dup
            aload 1 /* elements */
            arraylength
            invokespecial java.util.ArrayDeque.<init>:(I)V
            putfield com.google.common.collect.ConsumingQueueIterator.queue:Ljava/util/Queue;
         2: .line 34
            aload 0 /* this */
            getfield com.google.common.collect.ConsumingQueueIterator.queue:Ljava/util/Queue;
            aload 1 /* elements */
            invokestatic java.util.Collections.addAll:(Ljava/util/Collection;[Ljava/lang/Object;)Z
            pop
         3: .line 35
            return
        end local 1 // java.lang.Object[] elements
        end local 0 // com.google.common.collect.ConsumingQueueIterator this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    4     0      this  Lcom/google/common/collect/ConsumingQueueIterator<TT;>;
            0    4     1  elements  [Ljava/lang/Object;
    Signature: ([TT;)V
    MethodParameters:
          Name  Flags
      elements  

  void <init>(java.util.Queue<T>);
    descriptor: (Ljava/util/Queue;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.ConsumingQueueIterator this
        start local 1 // java.util.Queue queue
         0: .line 37
            aload 0 /* this */
            invokespecial com.google.common.collect.AbstractIterator.<init>:()V
         1: .line 38
            aload 0 /* this */
            aload 1 /* queue */
            invokestatic com.google.common.base.Preconditions.checkNotNull:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.util.Queue
            putfield com.google.common.collect.ConsumingQueueIterator.queue:Ljava/util/Queue;
         2: .line 39
            return
        end local 1 // java.util.Queue queue
        end local 0 // com.google.common.collect.ConsumingQueueIterator this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    3     0   this  Lcom/google/common/collect/ConsumingQueueIterator<TT;>;
            0    3     1  queue  Ljava/util/Queue<TT;>;
    Signature: (Ljava/util/Queue<TT;>;)V
    MethodParameters:
       Name  Flags
      queue  

  public T computeNext();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.ConsumingQueueIterator this
         0: .line 43
            aload 0 /* this */
            getfield com.google.common.collect.ConsumingQueueIterator.queue:Ljava/util/Queue;
            invokeinterface java.util.Queue.isEmpty:()Z
            ifeq 1
            aload 0 /* this */
            invokevirtual com.google.common.collect.ConsumingQueueIterator.endOfData:()Ljava/lang/Object;
            goto 2
      StackMap locals:
      StackMap stack:
         1: aload 0 /* this */
            getfield com.google.common.collect.ConsumingQueueIterator.queue:Ljava/util/Queue;
            invokeinterface java.util.Queue.remove:()Ljava/lang/Object;
      StackMap locals:
      StackMap stack: java.lang.Object
         2: areturn
        end local 0 // com.google.common.collect.ConsumingQueueIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/google/common/collect/ConsumingQueueIterator<TT;>;
    Signature: ()TT;
}
Signature: <T:Ljava/lang/Object;>Lcom/google/common/collect/AbstractIterator<TT;>;
SourceFile: "ConsumingQueueIterator.java"
    RuntimeInvisibleAnnotations: 
      com.google.common.annotations.GwtCompatible()