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.map.immutable.ImmutableMapSerializationProxy$1 extends org.eclipse.collections.impl.block.procedure.checked.CheckedProcedure2<K, V>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy$1
  super_class: org.eclipse.collections.impl.block.procedure.checked.CheckedProcedure2
{
  final org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy this$0;
    descriptor: Lorg/eclipse/collections/impl/map/immutable/ImmutableMapSerializationProxy;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private final java.io.ObjectOutput val$out;
    descriptor: Ljava/io/ObjectOutput;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy, java.io.ObjectOutput);
    descriptor: (Lorg/eclipse/collections/impl/map/immutable/ImmutableMapSerializationProxy;Ljava/io/ObjectOutput;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy$1 this
         0: .line 46
            aload 0 /* this */
            aload 1
            putfield org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy$1.this$0:Lorg/eclipse/collections/impl/map/immutable/ImmutableMapSerializationProxy;
            aload 0 /* this */
            aload 2
            putfield org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy$1.val$out:Ljava/io/ObjectOutput;
            aload 0 /* this */
            invokespecial org.eclipse.collections.impl.block.procedure.checked.CheckedProcedure2.<init>:()V
            return
        end local 0 // org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/map/immutable/ImmutableMapSerializationProxy$1;
    MethodParameters:
         Name  Flags
      this$0   final
      val$out  final

  public void safeValue(K, );
    descriptor: (Ljava/lang/Object;Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy$1 this
        start local 1 // java.lang.Object key
        start local 2 // java.lang.Object value
         0: .line 50
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy$1.val$out:Ljava/io/ObjectOutput;
            aload 1 /* key */
            invokeinterface java.io.ObjectOutput.writeObject:(Ljava/lang/Object;)V
         1: .line 51
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy$1.val$out:Ljava/io/ObjectOutput;
            aload 2 /* value */
            invokeinterface java.io.ObjectOutput.writeObject:(Ljava/lang/Object;)V
         2: .line 52
            return
        end local 2 // java.lang.Object value
        end local 1 // java.lang.Object key
        end local 0 // org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy$1 this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    3     0   this  Lorg/eclipse/collections/impl/map/immutable/ImmutableMapSerializationProxy$1;
            0    3     1    key  TK;
            0    3     2  value  TV;
    Exceptions:
      throws java.io.IOException
    Signature: (TK;TV;)V
    MethodParameters:
       Name  Flags
      key    
      value  
}
Signature: Lorg/eclipse/collections/impl/block/procedure/checked/CheckedProcedure2<TK;TV;>;
SourceFile: "ImmutableMapSerializationProxy.java"
EnclosingMethod: org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy.writeExternal:(Ljava/io/ObjectOutput;)V
NestHost: org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy
InnerClasses:
  org.eclipse.collections.impl.map.immutable.ImmutableMapSerializationProxy$1