https://github.com/eclipse/eclipse-collections/eclipse-collections: Eclipse Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
  • Craig P. Motlin
  • Donald Raab
  • Mohammad A. Rezaei
  • Hiroshi Ito
  • Nikhil J. Nanivadekar 
public final class org.eclipse.collections.impl.lazy.iterator.CollectIterator<T, V> implements java.util.Iterator<V>
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.eclipse.collections.impl.lazy.iterator.CollectIterator
  super_class: java.lang.Object
{
  private final java.util.Iterator<T> iterator;
    descriptor: Ljava/util/Iterator;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/Iterator<TT;>;

  private final org.eclipse.collections.api.block.function.Function<? super T, ? extends V> function;
    descriptor: Lorg/eclipse/collections/api/block/function/Function;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Lorg/eclipse/collections/api/block/function/Function<-TT;+TV;>;

  public void <init>(java.lang.Iterable<T>, org.eclipse.collections.api.block.function.Function<? super T, ? extends V>);
    descriptor: (Ljava/lang/Iterable;Lorg/eclipse/collections/api/block/function/Function;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.eclipse.collections.impl.lazy.iterator.CollectIterator this
        start local 1 // java.lang.Iterable iterable
        start local 2 // org.eclipse.collections.api.block.function.Function function
         0: .line 26
            aload 0 /* this */
            aload 1 /* iterable */
            invokeinterface java.lang.Iterable.iterator:()Ljava/util/Iterator;
            aload 2 /* function */
            invokespecial org.eclipse.collections.impl.lazy.iterator.CollectIterator.<init>:(Ljava/util/Iterator;Lorg/eclipse/collections/api/block/function/Function;)V
         1: .line 27
            return
        end local 2 // org.eclipse.collections.api.block.function.Function function
        end local 1 // java.lang.Iterable iterable
        end local 0 // org.eclipse.collections.impl.lazy.iterator.CollectIterator this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0      this  Lorg/eclipse/collections/impl/lazy/iterator/CollectIterator<TT;TV;>;
            0    2     1  iterable  Ljava/lang/Iterable<TT;>;
            0    2     2  function  Lorg/eclipse/collections/api/block/function/Function<-TT;+TV;>;
    Signature: (Ljava/lang/Iterable<TT;>;Lorg/eclipse/collections/api/block/function/Function<-TT;+TV;>;)V
    MethodParameters:
          Name  Flags
      iterable  
      function  

  public void <init>(java.util.Iterator<T>, org.eclipse.collections.api.block.function.Function<? super T, ? extends V>);
    descriptor: (Ljava/util/Iterator;Lorg/eclipse/collections/api/block/function/Function;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.eclipse.collections.impl.lazy.iterator.CollectIterator this
        start local 1 // java.util.Iterator newIterator
        start local 2 // org.eclipse.collections.api.block.function.Function function
         0: .line 29
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 31
            aload 0 /* this */
            aload 1 /* newIterator */
            putfield org.eclipse.collections.impl.lazy.iterator.CollectIterator.iterator:Ljava/util/Iterator;
         2: .line 32
            aload 0 /* this */
            aload 2 /* function */
            putfield org.eclipse.collections.impl.lazy.iterator.CollectIterator.function:Lorg/eclipse/collections/api/block/function/Function;
         3: .line 33
            return
        end local 2 // org.eclipse.collections.api.block.function.Function function
        end local 1 // java.util.Iterator newIterator
        end local 0 // org.eclipse.collections.impl.lazy.iterator.CollectIterator this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    4     0         this  Lorg/eclipse/collections/impl/lazy/iterator/CollectIterator<TT;TV;>;
            0    4     1  newIterator  Ljava/util/Iterator<TT;>;
            0    4     2     function  Lorg/eclipse/collections/api/block/function/Function<-TT;+TV;>;
    Signature: (Ljava/util/Iterator<TT;>;Lorg/eclipse/collections/api/block/function/Function<-TT;+TV;>;)V
    MethodParameters:
             Name  Flags
      newIterator  
      function     

  public void remove();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.lazy.iterator.CollectIterator this
         0: .line 38
            new java.lang.UnsupportedOperationException
            dup
            ldc "Cannot remove from a collect iterator"
            invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // org.eclipse.collections.impl.lazy.iterator.CollectIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/lazy/iterator/CollectIterator<TT;TV;>;

  public boolean hasNext();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.lazy.iterator.CollectIterator this
         0: .line 44
            aload 0 /* this */
            getfield org.eclipse.collections.impl.lazy.iterator.CollectIterator.iterator:Ljava/util/Iterator;
            invokeinterface java.util.Iterator.hasNext:()Z
            ireturn
        end local 0 // org.eclipse.collections.impl.lazy.iterator.CollectIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/lazy/iterator/CollectIterator<TT;TV;>;

  public V next();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.lazy.iterator.CollectIterator this
         0: .line 50
            aload 0 /* this */
            invokevirtual org.eclipse.collections.impl.lazy.iterator.CollectIterator.hasNext:()Z
            ifeq 2
         1: .line 52
            aload 0 /* this */
            getfield org.eclipse.collections.impl.lazy.iterator.CollectIterator.function:Lorg/eclipse/collections/api/block/function/Function;
            aload 0 /* this */
            getfield org.eclipse.collections.impl.lazy.iterator.CollectIterator.iterator:Ljava/util/Iterator;
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            invokeinterface org.eclipse.collections.api.block.function.Function.valueOf:(Ljava/lang/Object;)Ljava/lang/Object;
            areturn
         2: .line 54
      StackMap locals:
      StackMap stack:
            new java.util.NoSuchElementException
            dup
            invokespecial java.util.NoSuchElementException.<init>:()V
            athrow
        end local 0 // org.eclipse.collections.impl.lazy.iterator.CollectIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/eclipse/collections/impl/lazy/iterator/CollectIterator<TT;TV;>;
    Signature: ()TV;
}
Signature: <T:Ljava/lang/Object;V:Ljava/lang/Object;>Ljava/lang/Object;Ljava/util/Iterator<TV;>;
SourceFile: "CollectIterator.java"