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
  • Sirisha Pratha 
public abstract class org.eclipse.collections.impl.map.mutable.AbstractMutableMap$ValuesCollectionCommon<V> implements java.util.Collection<V>
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: org.eclipse.collections.impl.map.mutable.AbstractMutableMap$ValuesCollectionCommon
  super_class: java.lang.Object
{
  protected void <init>();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.map.mutable.AbstractMutableMap$ValuesCollectionCommon this
         0: .line 335
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.eclipse.collections.impl.map.mutable.AbstractMutableMap$ValuesCollectionCommon this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/map/mutable/AbstractMutableMap$ValuesCollectionCommon<TV;>;

  public boolean add();
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.map.mutable.AbstractMutableMap$ValuesCollectionCommon this
        start local 1 // java.lang.Object v
         0: .line 340
            new java.lang.UnsupportedOperationException
            dup
            new java.lang.StringBuilder
            dup
            ldc "Cannot call add() on "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            invokevirtual java.lang.Class.getSimpleName:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
            athrow
        end local 1 // java.lang.Object v
        end local 0 // org.eclipse.collections.impl.map.mutable.AbstractMutableMap$ValuesCollectionCommon this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/map/mutable/AbstractMutableMap$ValuesCollectionCommon<TV;>;
            0    1     1     v  TV;
    Signature: (TV;)Z
    MethodParameters:
      Name  Flags
      v     

  public boolean addAll(java.util.Collection<? extends V>);
    descriptor: (Ljava/util/Collection;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.map.mutable.AbstractMutableMap$ValuesCollectionCommon this
        start local 1 // java.util.Collection collection
         0: .line 346
            new java.lang.UnsupportedOperationException
            dup
            new java.lang.StringBuilder
            dup
            ldc "Cannot call addAll() on "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            invokevirtual java.lang.Class.getSimpleName:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
            athrow
        end local 1 // java.util.Collection collection
        end local 0 // org.eclipse.collections.impl.map.mutable.AbstractMutableMap$ValuesCollectionCommon this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    1     0        this  Lorg/eclipse/collections/impl/map/mutable/AbstractMutableMap$ValuesCollectionCommon<TV;>;
            0    1     1  collection  Ljava/util/Collection<+TV;>;
    Signature: (Ljava/util/Collection<+TV;>;)Z
    MethodParameters:
            Name  Flags
      collection  
}
Signature: <V:Ljava/lang/Object;>Ljava/lang/Object;Ljava/util/Collection<TV;>;
SourceFile: "AbstractMutableMap.java"
NestHost: org.eclipse.collections.impl.map.mutable.AbstractMutableMap
InnerClasses:
  protected abstract ValuesCollectionCommon = org.eclipse.collections.impl.map.mutable.AbstractMutableMap$ValuesCollectionCommon of org.eclipse.collections.impl.map.mutable.AbstractMutableMap