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.block.procedure.checked.MultimapKeyValuesSerializingProcedure<K, V> extends org.eclipse.collections.impl.block.procedure.checked.CheckedProcedure2<K, org.eclipse.collections.api.RichIterable<V>>
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure
  super_class: org.eclipse.collections.impl.block.procedure.checked.CheckedProcedure2
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  private final java.io.ObjectOutput out;
    descriptor: Ljava/io/ObjectOutput;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  public void <init>(java.io.ObjectOutput);
    descriptor: (Ljava/io/ObjectOutput;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure this
        start local 1 // java.io.ObjectOutput out
         0: .line 24
            aload 0 /* this */
            invokespecial org.eclipse.collections.impl.block.procedure.checked.CheckedProcedure2.<init>:()V
         1: .line 26
            aload 0 /* this */
            aload 1 /* out */
            putfield org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure.out:Ljava/io/ObjectOutput;
         2: .line 27
            return
        end local 1 // java.io.ObjectOutput out
        end local 0 // org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/eclipse/collections/impl/block/procedure/checked/MultimapKeyValuesSerializingProcedure<TK;TV;>;
            0    3     1   out  Ljava/io/ObjectOutput;
    MethodParameters:
      Name  Flags
      out   

  public void safeValue(K, org.eclipse.collections.api.RichIterable<V>);
    descriptor: (Ljava/lang/Object;Lorg/eclipse/collections/api/RichIterable;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=3
        start local 0 // org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure this
        start local 1 // java.lang.Object key
        start local 2 // org.eclipse.collections.api.RichIterable iterable
         0: .line 32
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure.out:Ljava/io/ObjectOutput;
            aload 1 /* key */
            invokeinterface java.io.ObjectOutput.writeObject:(Ljava/lang/Object;)V
         1: .line 33
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure.out:Ljava/io/ObjectOutput;
            aload 2 /* iterable */
            invokeinterface org.eclipse.collections.api.RichIterable.size:()I
            invokeinterface java.io.ObjectOutput.writeInt:(I)V
         2: .line 34
            aload 2 /* iterable */
            new org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure$1
            dup
            aload 0 /* this */
            invokespecial org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure$1.<init>:(Lorg/eclipse/collections/impl/block/procedure/checked/MultimapKeyValuesSerializingProcedure;)V
            invokeinterface org.eclipse.collections.api.RichIterable.forEach:(Lorg/eclipse/collections/api/block/procedure/Procedure;)V
         3: .line 41
            return
        end local 2 // org.eclipse.collections.api.RichIterable iterable
        end local 1 // java.lang.Object key
        end local 0 // org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    4     0      this  Lorg/eclipse/collections/impl/block/procedure/checked/MultimapKeyValuesSerializingProcedure<TK;TV;>;
            0    4     1       key  TK;
            0    4     2  iterable  Lorg/eclipse/collections/api/RichIterable<TV;>;
    Exceptions:
      throws java.io.IOException
    Signature: (TK;Lorg/eclipse/collections/api/RichIterable<TV;>;)V
    MethodParameters:
          Name  Flags
      key       
      iterable  

  public void safeValue(java.lang.Object, java.lang.Object);
    descriptor: (Ljava/lang/Object;Ljava/lang/Object;)V
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
         0: .line 1
            aload 0
            aload 1
            checkcast java.lang.Object
            aload 2
            checkcast org.eclipse.collections.api.RichIterable
            invokevirtual org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure.safeValue:(Ljava/lang/Object;Lorg/eclipse/collections/api/RichIterable;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    Exceptions:
      throws java.lang.Exception
}
Signature: <K:Ljava/lang/Object;V:Ljava/lang/Object;>Lorg/eclipse/collections/impl/block/procedure/checked/CheckedProcedure2<TK;Lorg/eclipse/collections/api/RichIterable<TV;>;>;
SourceFile: "MultimapKeyValuesSerializingProcedure.java"
NestMembers:
  org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure$1
InnerClasses:
  org.eclipse.collections.impl.block.procedure.checked.MultimapKeyValuesSerializingProcedure$1