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 class org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy<V> implements java.io.Externalizable
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy
  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.map.primitive.IntObjectMap<V> map;
    descriptor: Lorg/eclipse/collections/api/map/primitive/IntObjectMap;
    flags: (0x0002) ACC_PRIVATE
    Signature: Lorg/eclipse/collections/api/map/primitive/IntObjectMap<TV;>;

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy this
         0: .line 50
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 53
            return
        end local 0 // org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/eclipse/collections/impl/map/immutable/primitive/AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy<TV;>;

  protected void <init>(org.eclipse.collections.api.map.primitive.IntObjectMap<V>);
    descriptor: (Lorg/eclipse/collections/api/map/primitive/IntObjectMap;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy this
        start local 1 // org.eclipse.collections.api.map.primitive.IntObjectMap map
         0: .line 55
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 57
            aload 0 /* this */
            aload 1 /* map */
            putfield org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy.map:Lorg/eclipse/collections/api/map/primitive/IntObjectMap;
         2: .line 58
            return
        end local 1 // org.eclipse.collections.api.map.primitive.IntObjectMap map
        end local 0 // org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/eclipse/collections/impl/map/immutable/primitive/AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy<TV;>;
            0    3     1   map  Lorg/eclipse/collections/api/map/primitive/IntObjectMap<TV;>;
    Signature: (Lorg/eclipse/collections/api/map/primitive/IntObjectMap<TV;>;)V
    MethodParameters:
      Name  Flags
      map   

  public void writeExternal(java.io.ObjectOutput);
    descriptor: (Ljava/io/ObjectOutput;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=3, args_size=2
        start local 0 // org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy this
        start local 1 // java.io.ObjectOutput out
         0: .line 63
            aload 1 /* out */
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy.map:Lorg/eclipse/collections/api/map/primitive/IntObjectMap;
            invokeinterface org.eclipse.collections.api.map.primitive.IntObjectMap.size:()I
            invokeinterface java.io.ObjectOutput.writeInt:(I)V
         1: .line 66
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy.map:Lorg/eclipse/collections/api/map/primitive/IntObjectMap;
            new org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy$1
            dup
            aload 0 /* this */
            aload 1 /* out */
            invokespecial org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy$1.<init>:(Lorg/eclipse/collections/impl/map/immutable/primitive/AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy;Ljava/io/ObjectOutput;)V
            invokeinterface org.eclipse.collections.api.map.primitive.IntObjectMap.forEachKeyValue:(Lorg/eclipse/collections/api/block/procedure/primitive/IntObjectProcedure;)V
         2: .line 75
            goto 7
         3: .line 76
      StackMap locals:
      StackMap stack: java.lang.RuntimeException
            astore 2 /* e */
        start local 2 // java.lang.RuntimeException e
         4: .line 78
            aload 2 /* e */
            invokevirtual java.lang.RuntimeException.getCause:()Ljava/lang/Throwable;
            instanceof java.io.IOException
            ifeq 6
         5: .line 80
            aload 2 /* e */
            invokevirtual java.lang.RuntimeException.getCause:()Ljava/lang/Throwable;
            checkcast java.io.IOException
            athrow
         6: .line 82
      StackMap locals: java.lang.RuntimeException
      StackMap stack:
            aload 2 /* e */
            athrow
        end local 2 // java.lang.RuntimeException e
         7: .line 84
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.io.ObjectOutput out
        end local 0 // org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    8     0  this  Lorg/eclipse/collections/impl/map/immutable/primitive/AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy<TV;>;
            0    8     1   out  Ljava/io/ObjectOutput;
            4    7     2     e  Ljava/lang/RuntimeException;
      Exception table:
        from    to  target  type
           1     2       3  Class java.lang.RuntimeException
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      out   final

  public void readExternal(java.io.ObjectInput);
    descriptor: (Ljava/io/ObjectInput;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=5, args_size=2
        start local 0 // org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy this
        start local 1 // java.io.ObjectInput in
         0: .line 89
            aload 1 /* in */
            invokeinterface java.io.ObjectInput.readInt:()I
            istore 2 /* size */
        start local 2 // int size
         1: .line 90
            new org.eclipse.collections.impl.map.mutable.primitive.IntObjectHashMap
            dup
            invokespecial org.eclipse.collections.impl.map.mutable.primitive.IntObjectHashMap.<init>:()V
            astore 3 /* deserializedMap */
        start local 3 // org.eclipse.collections.api.map.primitive.MutableIntObjectMap deserializedMap
         2: .line 92
            iconst_0
            istore 4 /* i */
        start local 4 // int i
         3: goto 6
         4: .line 94
      StackMap locals: int org.eclipse.collections.api.map.primitive.MutableIntObjectMap int
      StackMap stack:
            aload 3 /* deserializedMap */
            aload 1 /* in */
            invokeinterface java.io.ObjectInput.readInt:()I
            aload 1 /* in */
            invokeinterface java.io.ObjectInput.readObject:()Ljava/lang/Object;
            invokeinterface org.eclipse.collections.api.map.primitive.MutableIntObjectMap.put:(ILjava/lang/Object;)Ljava/lang/Object;
            pop
         5: .line 92
            iinc 4 /* i */ 1
      StackMap locals:
      StackMap stack:
         6: iload 4 /* i */
            iload 2 /* size */
            if_icmplt 4
        end local 4 // int i
         7: .line 97
            aload 0 /* this */
            aload 3 /* deserializedMap */
            putfield org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy.map:Lorg/eclipse/collections/api/map/primitive/IntObjectMap;
         8: .line 98
            return
        end local 3 // org.eclipse.collections.api.map.primitive.MutableIntObjectMap deserializedMap
        end local 2 // int size
        end local 1 // java.io.ObjectInput in
        end local 0 // org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy this
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0    9     0             this  Lorg/eclipse/collections/impl/map/immutable/primitive/AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy<TV;>;
            0    9     1               in  Ljava/io/ObjectInput;
            1    9     2             size  I
            2    9     3  deserializedMap  Lorg/eclipse/collections/api/map/primitive/MutableIntObjectMap<TV;>;
            3    7     4                i  I
    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.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy this
         0: .line 102
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy.map:Lorg/eclipse/collections/api/map/primitive/IntObjectMap;
            invokeinterface org.eclipse.collections.api.map.primitive.IntObjectMap.toImmutable:()Lorg/eclipse/collections/api/map/primitive/ImmutableIntObjectMap;
            areturn
        end local 0 // org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/map/immutable/primitive/AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy<TV;>;
}
Signature: <V:Ljava/lang/Object;>Ljava/lang/Object;Ljava/io/Externalizable;
SourceFile: "AbstractImmutableIntObjectMap.java"
NestHost: org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap
InnerClasses:
  protected ImmutableIntObjectMapSerializationProxy = org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy of org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap
  org.eclipse.collections.impl.map.immutable.primitive.AbstractImmutableIntObjectMap$ImmutableIntObjectMapSerializationProxy$1