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 
class org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy<T> implements java.io.Externalizable
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy
  super_class: java.lang.Object
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  private org.eclipse.collections.api.bag.MutableBag<T> mutableBag;
    descriptor: Lorg/eclipse/collections/api/bag/MutableBag;
    flags: (0x0002) ACC_PRIVATE
    Signature: Lorg/eclipse/collections/api/bag/MutableBag<TT;>;

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy this
         0: .line 397
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 400
            return
        end local 0 // org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/eclipse/collections/impl/bag/mutable/UnmodifiableBag$UnmodifiableBagSerializationProxy<TT;>;

  private void <init>(org.eclipse.collections.api.bag.MutableBag<T>);
    descriptor: (Lorg/eclipse/collections/api/bag/MutableBag;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy this
        start local 1 // org.eclipse.collections.api.bag.MutableBag bag
         0: .line 402
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 404
            aload 0 /* this */
            aload 1 /* bag */
            putfield org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy.mutableBag:Lorg/eclipse/collections/api/bag/MutableBag;
         2: .line 405
            return
        end local 1 // org.eclipse.collections.api.bag.MutableBag bag
        end local 0 // org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/eclipse/collections/impl/bag/mutable/UnmodifiableBag$UnmodifiableBagSerializationProxy<TT;>;
            0    3     1   bag  Lorg/eclipse/collections/api/bag/MutableBag<TT;>;
    Signature: (Lorg/eclipse/collections/api/bag/MutableBag<TT;>;)V
    MethodParameters:
      Name  Flags
      bag   

  public void writeExternal(java.io.ObjectOutput);
    descriptor: (Ljava/io/ObjectOutput;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy this
        start local 1 // java.io.ObjectOutput out
         0: .line 412
            aload 1 /* out */
            aload 0 /* this */
            getfield org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy.mutableBag:Lorg/eclipse/collections/api/bag/MutableBag;
            invokeinterface java.io.ObjectOutput.writeObject:(Ljava/lang/Object;)V
         1: .line 413
            goto 6
         2: .line 414
      StackMap locals:
      StackMap stack: java.lang.RuntimeException
            astore 2 /* e */
        start local 2 // java.lang.RuntimeException e
         3: .line 416
            aload 2 /* e */
            invokevirtual java.lang.RuntimeException.getCause:()Ljava/lang/Throwable;
            instanceof java.io.IOException
            ifeq 5
         4: .line 418
            aload 2 /* e */
            invokevirtual java.lang.RuntimeException.getCause:()Ljava/lang/Throwable;
            checkcast java.io.IOException
            athrow
         5: .line 420
      StackMap locals: java.lang.RuntimeException
      StackMap stack:
            aload 2 /* e */
            athrow
        end local 2 // java.lang.RuntimeException e
         6: .line 422
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.io.ObjectOutput out
        end local 0 // org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Lorg/eclipse/collections/impl/bag/mutable/UnmodifiableBag$UnmodifiableBagSerializationProxy<TT;>;
            0    7     1   out  Ljava/io/ObjectOutput;
            3    6     2     e  Ljava/lang/RuntimeException;
      Exception table:
        from    to  target  type
           0     1       2  Class java.lang.RuntimeException
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      out   

  public void readExternal(java.io.ObjectInput);
    descriptor: (Ljava/io/ObjectInput;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy this
        start local 1 // java.io.ObjectInput in
         0: .line 427
            aload 0 /* this */
            aload 1 /* in */
            invokeinterface java.io.ObjectInput.readObject:()Ljava/lang/Object;
            checkcast org.eclipse.collections.api.bag.MutableBag
            putfield org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy.mutableBag:Lorg/eclipse/collections/api/bag/MutableBag;
         1: .line 428
            return
        end local 1 // java.io.ObjectInput in
        end local 0 // org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/eclipse/collections/impl/bag/mutable/UnmodifiableBag$UnmodifiableBagSerializationProxy<TT;>;
            0    2     1    in  Ljava/io/ObjectInput;
    Exceptions:
      throws java.io.IOException, java.lang.ClassNotFoundException
    MethodParameters:
      Name  Flags
      in    

  protected java.lang.Object readResolve();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy this
         0: .line 432
            aload 0 /* this */
            getfield org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy.mutableBag:Lorg/eclipse/collections/api/bag/MutableBag;
            invokeinterface org.eclipse.collections.api.bag.MutableBag.asUnmodifiable:()Lorg/eclipse/collections/api/bag/MutableBag;
            areturn
        end local 0 // org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/bag/mutable/UnmodifiableBag$UnmodifiableBagSerializationProxy<TT;>;
}
Signature: <T:Ljava/lang/Object;>Ljava/lang/Object;Ljava/io/Externalizable;
SourceFile: "UnmodifiableBag.java"
NestHost: org.eclipse.collections.impl.bag.mutable.UnmodifiableBag
InnerClasses:
  private UnmodifiableBagSerializationProxy = org.eclipse.collections.impl.bag.mutable.UnmodifiableBag$UnmodifiableBagSerializationProxy of org.eclipse.collections.impl.bag.mutable.UnmodifiableBag