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 
final class org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure implements org.eclipse.collections.api.block.procedure.primitive.IntProcedure
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure
  super_class: java.lang.Object
{
  private int sum;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure this
         0: .line 463
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 465
            aload 0 /* this */
            iconst_0
            putfield org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure.sum:I
         2: .line 463
            return
        end local 0 // org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/eclipse/collections/impl/lazy/primitive/AbstractLazyIntIterable$IntSumProcedure;

  public void value(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure this
        start local 1 // int each
         0: .line 470
            aload 0 /* this */
            dup
            getfield org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure.sum:I
            iload 1 /* each */
            iadd
            putfield org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure.sum:I
         1: .line 471
            return
        end local 1 // int each
        end local 0 // org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/eclipse/collections/impl/lazy/primitive/AbstractLazyIntIterable$IntSumProcedure;
            0    2     1  each  I
    MethodParameters:
      Name  Flags
      each  

  public int getValue();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure this
         0: .line 475
            aload 0 /* this */
            getfield org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure.sum:I
            ireturn
        end local 0 // org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/lazy/primitive/AbstractLazyIntIterable$IntSumProcedure;
}
SourceFile: "AbstractLazyIntIterable.java"
NestHost: org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable
InnerClasses:
  private final IntSumProcedure = org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable$IntSumProcedure of org.eclipse.collections.impl.lazy.primitive.AbstractLazyIntIterable