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.Iterables$3 extends com.google.common.collect.FluentIterable<java.util.List<T>>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.collect.Iterables$3
  super_class: com.google.common.collect.FluentIterable
{
  private final java.lang.Iterable val$iterable;
    descriptor: Ljava/lang/Iterable;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  private final int val$size;
    descriptor: I
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(java.lang.Iterable, int);
    descriptor: (Ljava/lang/Iterable;I)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.google.common.collect.Iterables$3 this
         0: .line 538
            aload 0 /* this */
            aload 1
            putfield com.google.common.collect.Iterables$3.val$iterable:Ljava/lang/Iterable;
            aload 0 /* this */
            iload 2
            putfield com.google.common.collect.Iterables$3.val$size:I
            aload 0 /* this */
            invokespecial com.google.common.collect.FluentIterable.<init>:()V
            return
        end local 0 // com.google.common.collect.Iterables$3 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Iterables$3;
    MethodParameters:
              Name  Flags
      val$iterable  final
      val$size      final

  public java.util.Iterator<java.util.List<T>> iterator();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.google.common.collect.Iterables$3 this
         0: .line 541
            aload 0 /* this */
            getfield com.google.common.collect.Iterables$3.val$iterable:Ljava/lang/Iterable;
            invokeinterface java.lang.Iterable.iterator:()Ljava/util/Iterator;
            aload 0 /* this */
            getfield com.google.common.collect.Iterables$3.val$size:I
            invokestatic com.google.common.collect.Iterators.paddedPartition:(Ljava/util/Iterator;I)Lcom/google/common/collect/UnmodifiableIterator;
            areturn
        end local 0 // com.google.common.collect.Iterables$3 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Iterables$3;
    Signature: ()Ljava/util/Iterator<Ljava/util/List<TT;>;>;
}
Signature: Lcom/google/common/collect/FluentIterable<Ljava/util/List<TT;>;>;
SourceFile: "Iterables.java"
EnclosingMethod: com.google.common.collect.Iterables.paddedPartition:(Ljava/lang/Iterable;I)Ljava/lang/Iterable;
NestHost: com.google.common.collect.Iterables
InnerClasses:
  com.google.common.collect.Iterables$3