https://github.com/google/guava/guava: Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. 
final class com.google.common.cache.LocalCache$EntrySet extends com.google.common.cache.LocalCache<K, V>.AbstractCacheSet<java.util.Map$Entry<K, V>>
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.google.common.cache.LocalCache$EntrySet
  super_class: com.google.common.cache.LocalCache$AbstractCacheSet
{
  final com.google.common.cache.LocalCache this$0;
    descriptor: Lcom/google/common/cache/LocalCache;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(java.util.concurrent.ConcurrentMap<?, ?>);
    descriptor: (Lcom/google/common/cache/LocalCache;Ljava/util/concurrent/ConcurrentMap;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.google.common.cache.LocalCache$EntrySet this
        start local 2 // java.util.concurrent.ConcurrentMap map
         0: .line 4634
            aload 0 /* this */
            aload 1
            putfield com.google.common.cache.LocalCache$EntrySet.this$0:Lcom/google/common/cache/LocalCache;
         1: .line 4635
            aload 0 /* this */
            aload 1
            aload 2 /* map */
            invokespecial com.google.common.cache.LocalCache$AbstractCacheSet.<init>:(Lcom/google/common/cache/LocalCache;Ljava/util/concurrent/ConcurrentMap;)V
         2: .line 4636
            return
        end local 2 // java.util.concurrent.ConcurrentMap map
        end local 0 // com.google.common.cache.LocalCache$EntrySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/google/common/cache/LocalCache$EntrySet;
            0    3     2   map  Ljava/util/concurrent/ConcurrentMap<**>;
    Signature: (Ljava/util/concurrent/ConcurrentMap<**>;)V
    MethodParameters:
        Name  Flags
      this$0  final
      map     

  public java.util.Iterator<java.util.Map$Entry<K, V>> iterator();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.google.common.cache.LocalCache$EntrySet this
         0: .line 4640
            new com.google.common.cache.LocalCache$EntryIterator
            dup
            aload 0 /* this */
            getfield com.google.common.cache.LocalCache$EntrySet.this$0:Lcom/google/common/cache/LocalCache;
            invokespecial com.google.common.cache.LocalCache$EntryIterator.<init>:(Lcom/google/common/cache/LocalCache;)V
            areturn
        end local 0 // com.google.common.cache.LocalCache$EntrySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/cache/LocalCache$EntrySet;
    Signature: ()Ljava/util/Iterator<Ljava/util/Map$Entry<TK;TV;>;>;

  public boolean removeIf(java.util.function.Predicate<? super java.util.Map$Entry<K, V>>);
    descriptor: (Ljava/util/function/Predicate;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.cache.LocalCache$EntrySet this
        start local 1 // java.util.function.Predicate filter
         0: .line 4645
            aload 1 /* filter */
            invokestatic com.google.common.base.Preconditions.checkNotNull:(Ljava/lang/Object;)Ljava/lang/Object;
            pop
         1: .line 4646
            aload 0 /* this */
            getfield com.google.common.cache.LocalCache$EntrySet.this$0:Lcom/google/common/cache/LocalCache;
            aload 1 /* filter */
            invokedynamic test(Ljava/util/function/Predicate;)Ljava/util/function/BiPredicate;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Ljava/lang/Object;Ljava/lang/Object;)Z
                  com/google/common/cache/LocalCache$EntrySet.lambda$0(Ljava/util/function/Predicate;Ljava/lang/Object;Ljava/lang/Object;)Z (6)
                  (Ljava/lang/Object;Ljava/lang/Object;)Z
            invokevirtual com.google.common.cache.LocalCache.removeIf:(Ljava/util/function/BiPredicate;)Z
            ireturn
        end local 1 // java.util.function.Predicate filter
        end local 0 // com.google.common.cache.LocalCache$EntrySet this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lcom/google/common/cache/LocalCache$EntrySet;
            0    2     1  filter  Ljava/util/function/Predicate<-Ljava/util/Map$Entry<TK;TV;>;>;
    Signature: (Ljava/util/function/Predicate<-Ljava/util/Map$Entry<TK;TV;>;>;)Z
    MethodParameters:
        Name  Flags
      filter  

  public boolean contains(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=5, args_size=2
        start local 0 // com.google.common.cache.LocalCache$EntrySet this
        start local 1 // java.lang.Object o
         0: .line 4651
            aload 1 /* o */
            instanceof java.util.Map$Entry
            ifne 2
         1: .line 4652
            iconst_0
            ireturn
         2: .line 4654
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            checkcast java.util.Map$Entry
            astore 2 /* e */
        start local 2 // java.util.Map$Entry e
         3: .line 4655
            aload 2 /* e */
            invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
            astore 3 /* key */
        start local 3 // java.lang.Object key
         4: .line 4656
            aload 3 /* key */
            ifnonnull 6
         5: .line 4657
            iconst_0
            ireturn
         6: .line 4659
      StackMap locals: java.util.Map$Entry java.lang.Object
      StackMap stack:
            aload 0 /* this */
            getfield com.google.common.cache.LocalCache$EntrySet.this$0:Lcom/google/common/cache/LocalCache;
            aload 3 /* key */
            invokevirtual com.google.common.cache.LocalCache.get:(Ljava/lang/Object;)Ljava/lang/Object;
            astore 4 /* v */
        start local 4 // java.lang.Object v
         7: .line 4661
            aload 4 /* v */
            ifnull 8
            aload 0 /* this */
            getfield com.google.common.cache.LocalCache$EntrySet.this$0:Lcom/google/common/cache/LocalCache;
            getfield com.google.common.cache.LocalCache.valueEquivalence:Lcom/google/common/base/Equivalence;
            aload 2 /* e */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            aload 4 /* v */
            invokevirtual com.google.common.base.Equivalence.equivalent:(Ljava/lang/Object;Ljava/lang/Object;)Z
            ifeq 8
            iconst_1
            ireturn
      StackMap locals: java.lang.Object
      StackMap stack:
         8: iconst_0
            ireturn
        end local 4 // java.lang.Object v
        end local 3 // java.lang.Object key
        end local 2 // java.util.Map$Entry e
        end local 1 // java.lang.Object o
        end local 0 // com.google.common.cache.LocalCache$EntrySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    9     0  this  Lcom/google/common/cache/LocalCache$EntrySet;
            0    9     1     o  Ljava/lang/Object;
            3    9     2     e  Ljava/util/Map$Entry<**>;
            4    9     3   key  Ljava/lang/Object;
            7    9     4     v  TV;
    MethodParameters:
      Name  Flags
      o     

  public boolean remove(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=4, args_size=2
        start local 0 // com.google.common.cache.LocalCache$EntrySet this
        start local 1 // java.lang.Object o
         0: .line 4666
            aload 1 /* o */
            instanceof java.util.Map$Entry
            ifne 2
         1: .line 4667
            iconst_0
            ireturn
         2: .line 4669
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            checkcast java.util.Map$Entry
            astore 2 /* e */
        start local 2 // java.util.Map$Entry e
         3: .line 4670
            aload 2 /* e */
            invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
            astore 3 /* key */
        start local 3 // java.lang.Object key
         4: .line 4671
            aload 3 /* key */
            ifnull 5
            aload 0 /* this */
            getfield com.google.common.cache.LocalCache$EntrySet.this$0:Lcom/google/common/cache/LocalCache;
            aload 3 /* key */
            aload 2 /* e */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            invokevirtual com.google.common.cache.LocalCache.remove:(Ljava/lang/Object;Ljava/lang/Object;)Z
            ifeq 5
            iconst_1
            ireturn
      StackMap locals: java.util.Map$Entry java.lang.Object
      StackMap stack:
         5: iconst_0
            ireturn
        end local 3 // java.lang.Object key
        end local 2 // java.util.Map$Entry e
        end local 1 // java.lang.Object o
        end local 0 // com.google.common.cache.LocalCache$EntrySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lcom/google/common/cache/LocalCache$EntrySet;
            0    6     1     o  Ljava/lang/Object;
            3    6     2     e  Ljava/util/Map$Entry<**>;
            4    6     3   key  Ljava/lang/Object;
    MethodParameters:
      Name  Flags
      o     

  private static boolean lambda$0(java.util.function.Predicate, java.lang.Object, java.lang.Object);
    descriptor: (Ljava/util/function/Predicate;Ljava/lang/Object;Ljava/lang/Object;)Z
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
        start local 1 // java.lang.Object k
        start local 2 // java.lang.Object v
         0: .line 4646
            aload 0
            aload 1 /* k */
            aload 2 /* v */
            invokestatic com.google.common.collect.Maps.immutableEntry:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/util/Map$Entry;
            invokeinterface java.util.function.Predicate.test:(Ljava/lang/Object;)Z
            ireturn
        end local 2 // java.lang.Object v
        end local 1 // java.lang.Object k
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     1     k  TK;
            0    1     2     v  TV;
}
Signature: Lcom/google/common/cache/LocalCache<TK;TV;>.AbstractCacheSet<Ljava/util/Map$Entry<TK;TV;>;>;
SourceFile: "LocalCache.java"
NestHost: com.google.common.cache.LocalCache
InnerClasses:
  abstract AbstractCacheSet = com.google.common.cache.LocalCache$AbstractCacheSet of com.google.common.cache.LocalCache
  final EntryIterator = com.google.common.cache.LocalCache$EntryIterator of com.google.common.cache.LocalCache
  final EntrySet = com.google.common.cache.LocalCache$EntrySet of com.google.common.cache.LocalCache
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles
  public abstract Entry = java.util.Map$Entry of java.util.Map