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.Predicates$InSetPredicate extends org.eclipse.collections.impl.block.factory.Predicates<java.lang.Object>
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: org.eclipse.collections.impl.block.factory.Predicates$InSetPredicate
  super_class: org.eclipse.collections.impl.block.factory.Predicates
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  private final java.util.Set<?> set;
    descriptor: Ljava/util/Set;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/Set<*>;

  private void <init>(java.util.Set<?>);
    descriptor: (Ljava/util/Set;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.block.factory.Predicates$InSetPredicate this
        start local 1 // java.util.Set set
         0: .line 1200
            aload 0 /* this */
            invokespecial org.eclipse.collections.impl.block.factory.Predicates.<init>:()V
         1: .line 1202
            aload 0 /* this */
            aload 1 /* set */
            putfield org.eclipse.collections.impl.block.factory.Predicates$InSetPredicate.set:Ljava/util/Set;
         2: .line 1203
            return
        end local 1 // java.util.Set set
        end local 0 // org.eclipse.collections.impl.block.factory.Predicates$InSetPredicate this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/eclipse/collections/impl/block/factory/Predicates$InSetPredicate;
            0    3     1   set  Ljava/util/Set<*>;
    Signature: (Ljava/util/Set<*>;)V
    MethodParameters:
      Name  Flags
      set   

  public boolean accept(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.block.factory.Predicates$InSetPredicate this
        start local 1 // java.lang.Object anObject
         0: .line 1208
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.factory.Predicates$InSetPredicate.set:Ljava/util/Set;
            aload 1 /* anObject */
            invokeinterface java.util.Set.contains:(Ljava/lang/Object;)Z
            ireturn
        end local 1 // java.lang.Object anObject
        end local 0 // org.eclipse.collections.impl.block.factory.Predicates$InSetPredicate this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    1     0      this  Lorg/eclipse/collections/impl/block/factory/Predicates$InSetPredicate;
            0    1     1  anObject  Ljava/lang/Object;
    MethodParameters:
          Name  Flags
      anObject  

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.block.factory.Predicates$InSetPredicate this
         0: .line 1214
            new java.lang.StringBuilder
            dup
            ldc "Predicates.in("
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.factory.Predicates$InSetPredicate.set:Ljava/util/Set;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            bipush 41
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 0 // org.eclipse.collections.impl.block.factory.Predicates$InSetPredicate this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/block/factory/Predicates$InSetPredicate;
}
Signature: Lorg/eclipse/collections/impl/block/factory/Predicates<Ljava/lang/Object;>;
SourceFile: "Predicates.java"
NestHost: org.eclipse.collections.impl.block.factory.Predicates
InnerClasses:
  private final InSetPredicate = org.eclipse.collections.impl.block.factory.Predicates$InSetPredicate of org.eclipse.collections.impl.block.factory.Predicates