https://github.com/eclipse/eclipse-collections/eclipse-collections-api: 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.api.factory.Bags
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.eclipse.collections.api.factory.Bags
  super_class: java.lang.Object
{
  public static final org.eclipse.collections.api.factory.bag.ImmutableBagFactory immutable;
    descriptor: Lorg/eclipse/collections/api/factory/bag/ImmutableBagFactory;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final org.eclipse.collections.api.factory.bag.MutableBagFactory mutable;
    descriptor: Lorg/eclipse/collections/api/factory/bag/MutableBagFactory;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 38
            ldc Lorg/eclipse/collections/api/factory/bag/ImmutableBagFactory;
            invokestatic org.eclipse.collections.api.factory.ServiceLoaderUtils.loadServiceClass:(Ljava/lang/Class;)Ljava/lang/Object;
            checkcast org.eclipse.collections.api.factory.bag.ImmutableBagFactory
            putstatic org.eclipse.collections.api.factory.Bags.immutable:Lorg/eclipse/collections/api/factory/bag/ImmutableBagFactory;
         1: .line 39
            ldc Lorg/eclipse/collections/api/factory/bag/MutableBagFactory;
            invokestatic org.eclipse.collections.api.factory.ServiceLoaderUtils.loadServiceClass:(Ljava/lang/Class;)Ljava/lang/Object;
            checkcast org.eclipse.collections.api.factory.bag.MutableBagFactory
            putstatic org.eclipse.collections.api.factory.Bags.mutable:Lorg/eclipse/collections/api/factory/bag/MutableBagFactory;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.eclipse.collections.api.factory.Bags this
         0: .line 41
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 43
            new java.lang.AssertionError
            dup
            ldc "Suppress default constructor for noninstantiability"
            invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
            athrow
        end local 0 // org.eclipse.collections.api.factory.Bags this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/eclipse/collections/api/factory/Bags;
}
SourceFile: "Bags.java"