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 
final class org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy<T, V> implements org.eclipse.collections.api.block.HashingStrategy<T>
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy
  super_class: java.lang.Object
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  private final org.eclipse.collections.api.block.function.Function<? super T, ? extends V> function;
    descriptor: Lorg/eclipse/collections/api/block/function/Function;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Lorg/eclipse/collections/api/block/function/Function<-TT;+TV;>;

  private void <init>(org.eclipse.collections.api.block.function.Function<? super T, ? extends V>);
    descriptor: (Lorg/eclipse/collections/api/block/function/Function;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy this
        start local 1 // org.eclipse.collections.api.block.function.Function function
         0: .line 175
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 177
            aload 0 /* this */
            aload 1 /* function */
            putfield org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy.function:Lorg/eclipse/collections/api/block/function/Function;
         2: .line 178
            return
        end local 1 // org.eclipse.collections.api.block.function.Function function
        end local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    3     0      this  Lorg/eclipse/collections/impl/block/factory/HashingStrategies$NullSafeFunctionHashingStrategy<TT;TV;>;
            0    3     1  function  Lorg/eclipse/collections/api/block/function/Function<-TT;+TV;>;
    Signature: (Lorg/eclipse/collections/api/block/function/Function<-TT;+TV;>;)V
    MethodParameters:
          Name  Flags
      function  

  public int computeHashCode();
    descriptor: (Ljava/lang/Object;)I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy this
        start local 1 // java.lang.Object object
         0: .line 183
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy.function:Lorg/eclipse/collections/api/block/function/Function;
            aload 1 /* object */
            invokeinterface org.eclipse.collections.api.block.function.Function.valueOf:(Ljava/lang/Object;)Ljava/lang/Object;
            invokestatic java.util.Objects.hashCode:(Ljava/lang/Object;)I
            ireturn
        end local 1 // java.lang.Object object
        end local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    1     0    this  Lorg/eclipse/collections/impl/block/factory/HashingStrategies$NullSafeFunctionHashingStrategy<TT;TV;>;
            0    1     1  object  TT;
    Signature: (TT;)I
    MethodParameters:
        Name  Flags
      object  

  public boolean equals(T, );
    descriptor: (Ljava/lang/Object;Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy this
        start local 1 // java.lang.Object object1
        start local 2 // java.lang.Object object2
         0: .line 190
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy.function:Lorg/eclipse/collections/api/block/function/Function;
            aload 1 /* object1 */
            invokeinterface org.eclipse.collections.api.block.function.Function.valueOf:(Ljava/lang/Object;)Ljava/lang/Object;
         1: .line 191
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy.function:Lorg/eclipse/collections/api/block/function/Function;
            aload 2 /* object2 */
            invokeinterface org.eclipse.collections.api.block.function.Function.valueOf:(Ljava/lang/Object;)Ljava/lang/Object;
         2: .line 189
            invokestatic java.util.Objects.equals:(Ljava/lang/Object;Ljava/lang/Object;)Z
            ireturn
        end local 2 // java.lang.Object object2
        end local 1 // java.lang.Object object1
        end local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    3     0     this  Lorg/eclipse/collections/impl/block/factory/HashingStrategies$NullSafeFunctionHashingStrategy<TT;TV;>;
            0    3     1  object1  TT;
            0    3     2  object2  TT;
    Signature: (TT;TT;)Z
    MethodParameters:
         Name  Flags
      object1  
      object2  
}
Signature: <T:Ljava/lang/Object;V:Ljava/lang/Object;>Ljava/lang/Object;Lorg/eclipse/collections/api/block/HashingStrategy<TT;>;
SourceFile: "HashingStrategies.java"
NestHost: org.eclipse.collections.impl.block.factory.HashingStrategies
InnerClasses:
  private final NullSafeFunctionHashingStrategy = org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeFunctionHashingStrategy of org.eclipse.collections.impl.block.factory.HashingStrategies