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.collect.Sets$UnmodifiableNavigableSet<E> extends com.google.common.collect.ForwardingSortedSet<E> implements java.util.NavigableSet<E>, java.io.Serializable
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.google.common.collect.Sets$UnmodifiableNavigableSet
  super_class: com.google.common.collect.ForwardingSortedSet
{
  private final java.util.NavigableSet<E> delegate;
    descriptor: Ljava/util/NavigableSet;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/NavigableSet<TE;>;

  private final java.util.SortedSet<E> unmodifiableDelegate;
    descriptor: Ljava/util/SortedSet;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/SortedSet<TE;>;

  private transient com.google.common.collect.Sets$UnmodifiableNavigableSet<E> descendingSet;
    descriptor: Lcom/google/common/collect/Sets$UnmodifiableNavigableSet;
    flags: (0x0082) ACC_PRIVATE, ACC_TRANSIENT
    Signature: Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
    RuntimeVisibleTypeAnnotations: 
      FIELD
        org.checkerframework.checker.nullness.qual.Nullable()

  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 0

  void <init>(java.util.NavigableSet<E>);
    descriptor: (Ljava/util/NavigableSet;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
        start local 1 // java.util.NavigableSet delegate
         0: .line 1797
            aload 0 /* this */
            invokespecial com.google.common.collect.ForwardingSortedSet.<init>:()V
         1: .line 1798
            aload 0 /* this */
            aload 1 /* delegate */
            invokestatic com.google.common.base.Preconditions.checkNotNull:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.util.NavigableSet
            putfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
         2: .line 1799
            aload 0 /* this */
            aload 1 /* delegate */
            invokestatic java.util.Collections.unmodifiableSortedSet:(Ljava/util/SortedSet;)Ljava/util/SortedSet;
            putfield com.google.common.collect.Sets$UnmodifiableNavigableSet.unmodifiableDelegate:Ljava/util/SortedSet;
         3: .line 1800
            return
        end local 1 // java.util.NavigableSet delegate
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    4     0      this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
            0    4     1  delegate  Ljava/util/NavigableSet<TE;>;
    Signature: (Ljava/util/NavigableSet<TE;>;)V
    MethodParameters:
          Name  Flags
      delegate  

  protected java.util.SortedSet<E> delegate();
    descriptor: ()Ljava/util/SortedSet;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
         0: .line 1804
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.unmodifiableDelegate:Ljava/util/SortedSet;
            areturn
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
    Signature: ()Ljava/util/SortedSet<TE;>;

  public boolean removeIf(java.util.function.Predicate<? super E>);
    descriptor: (Ljava/util/function/Predicate;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
        start local 1 // java.util.function.Predicate filter
         0: .line 1811
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 1 // java.util.function.Predicate filter
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    1     0    this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
            0    1     1  filter  Ljava/util/function/Predicate<-TE;>;
    Signature: (Ljava/util/function/Predicate<-TE;>;)Z
    MethodParameters:
        Name  Flags
      filter  

  public java.util.stream.Stream<E> stream();
    descriptor: ()Ljava/util/stream/Stream;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
         0: .line 1816
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            invokeinterface java.util.NavigableSet.stream:()Ljava/util/stream/Stream;
            areturn
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
    Signature: ()Ljava/util/stream/Stream<TE;>;

  public java.util.stream.Stream<E> parallelStream();
    descriptor: ()Ljava/util/stream/Stream;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
         0: .line 1821
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            invokeinterface java.util.NavigableSet.parallelStream:()Ljava/util/stream/Stream;
            areturn
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
    Signature: ()Ljava/util/stream/Stream<TE;>;

  public void forEach(java.util.function.Consumer<? super E>);
    descriptor: (Ljava/util/function/Consumer;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
        start local 1 // java.util.function.Consumer action
         0: .line 1826
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            aload 1 /* action */
            invokeinterface java.util.NavigableSet.forEach:(Ljava/util/function/Consumer;)V
         1: .line 1827
            return
        end local 1 // java.util.function.Consumer action
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
            0    2     1  action  Ljava/util/function/Consumer<-TE;>;
    Signature: (Ljava/util/function/Consumer<-TE;>;)V
    MethodParameters:
        Name  Flags
      action  

  public E lower();
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
        start local 1 // java.lang.Object e
         0: .line 1831
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            aload 1 /* e */
            invokeinterface java.util.NavigableSet.lower:(Ljava/lang/Object;)Ljava/lang/Object;
            areturn
        end local 1 // java.lang.Object e
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
            0    1     1     e  TE;
    Signature: (TE;)TE;
    MethodParameters:
      Name  Flags
      e     

  public E floor();
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
        start local 1 // java.lang.Object e
         0: .line 1836
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            aload 1 /* e */
            invokeinterface java.util.NavigableSet.floor:(Ljava/lang/Object;)Ljava/lang/Object;
            areturn
        end local 1 // java.lang.Object e
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
            0    1     1     e  TE;
    Signature: (TE;)TE;
    MethodParameters:
      Name  Flags
      e     

  public E ceiling();
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
        start local 1 // java.lang.Object e
         0: .line 1841
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            aload 1 /* e */
            invokeinterface java.util.NavigableSet.ceiling:(Ljava/lang/Object;)Ljava/lang/Object;
            areturn
        end local 1 // java.lang.Object e
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
            0    1     1     e  TE;
    Signature: (TE;)TE;
    MethodParameters:
      Name  Flags
      e     

  public E higher();
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
        start local 1 // java.lang.Object e
         0: .line 1846
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            aload 1 /* e */
            invokeinterface java.util.NavigableSet.higher:(Ljava/lang/Object;)Ljava/lang/Object;
            areturn
        end local 1 // java.lang.Object e
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
            0    1     1     e  TE;
    Signature: (TE;)TE;
    MethodParameters:
      Name  Flags
      e     

  public E pollFirst();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
         0: .line 1851
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
    Signature: ()TE;

  public E pollLast();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
         0: .line 1856
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
    Signature: ()TE;

  public java.util.NavigableSet<E> descendingSet();
    descriptor: ()Ljava/util/NavigableSet;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=1
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
         0: .line 1863
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.descendingSet:Lcom/google/common/collect/Sets$UnmodifiableNavigableSet;
            astore 1 /* result */
        start local 1 // com.google.common.collect.Sets$UnmodifiableNavigableSet result
         1: .line 1864
            aload 1 /* result */
            ifnonnull 4
         2: .line 1865
            aload 0 /* this */
            new com.google.common.collect.Sets$UnmodifiableNavigableSet
            dup
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            invokeinterface java.util.NavigableSet.descendingSet:()Ljava/util/NavigableSet;
            invokespecial com.google.common.collect.Sets$UnmodifiableNavigableSet.<init>:(Ljava/util/NavigableSet;)V
            dup_x1
            putfield com.google.common.collect.Sets$UnmodifiableNavigableSet.descendingSet:Lcom/google/common/collect/Sets$UnmodifiableNavigableSet;
            astore 1 /* result */
         3: .line 1866
            aload 1 /* result */
            aload 0 /* this */
            putfield com.google.common.collect.Sets$UnmodifiableNavigableSet.descendingSet:Lcom/google/common/collect/Sets$UnmodifiableNavigableSet;
         4: .line 1868
      StackMap locals: com.google.common.collect.Sets$UnmodifiableNavigableSet
      StackMap stack:
            aload 1 /* result */
            areturn
        end local 1 // com.google.common.collect.Sets$UnmodifiableNavigableSet result
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    5     0    this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
            1    5     1  result  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
    Signature: ()Ljava/util/NavigableSet<TE;>;

  public java.util.Iterator<E> descendingIterator();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
         0: .line 1873
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            invokeinterface java.util.NavigableSet.descendingIterator:()Ljava/util/Iterator;
            invokestatic com.google.common.collect.Iterators.unmodifiableIterator:(Ljava/util/Iterator;)Lcom/google/common/collect/UnmodifiableIterator;
            areturn
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
    Signature: ()Ljava/util/Iterator<TE;>;

  public java.util.NavigableSet<E> subSet(E, boolean, E, boolean);
    descriptor: (Ljava/lang/Object;ZLjava/lang/Object;Z)Ljava/util/NavigableSet;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=5, args_size=5
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
        start local 1 // java.lang.Object fromElement
        start local 2 // boolean fromInclusive
        start local 3 // java.lang.Object toElement
        start local 4 // boolean toInclusive
         0: .line 1880
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            aload 1 /* fromElement */
            iload 2 /* fromInclusive */
            aload 3 /* toElement */
            iload 4 /* toInclusive */
            invokeinterface java.util.NavigableSet.subSet:(Ljava/lang/Object;ZLjava/lang/Object;Z)Ljava/util/NavigableSet;
         1: .line 1879
            invokestatic com.google.common.collect.Sets.unmodifiableNavigableSet:(Ljava/util/NavigableSet;)Ljava/util/NavigableSet;
            areturn
        end local 4 // boolean toInclusive
        end local 3 // java.lang.Object toElement
        end local 2 // boolean fromInclusive
        end local 1 // java.lang.Object fromElement
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    2     0           this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
            0    2     1    fromElement  TE;
            0    2     2  fromInclusive  Z
            0    2     3      toElement  TE;
            0    2     4    toInclusive  Z
    Signature: (TE;ZTE;Z)Ljava/util/NavigableSet<TE;>;
    MethodParameters:
               Name  Flags
      fromElement    
      fromInclusive  
      toElement      
      toInclusive    

  public java.util.NavigableSet<E> headSet(E, boolean);
    descriptor: (Ljava/lang/Object;Z)Ljava/util/NavigableSet;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
        start local 1 // java.lang.Object toElement
        start local 2 // boolean inclusive
         0: .line 1885
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            aload 1 /* toElement */
            iload 2 /* inclusive */
            invokeinterface java.util.NavigableSet.headSet:(Ljava/lang/Object;Z)Ljava/util/NavigableSet;
            invokestatic com.google.common.collect.Sets.unmodifiableNavigableSet:(Ljava/util/NavigableSet;)Ljava/util/NavigableSet;
            areturn
        end local 2 // boolean inclusive
        end local 1 // java.lang.Object toElement
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0       this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
            0    1     1  toElement  TE;
            0    1     2  inclusive  Z
    Signature: (TE;Z)Ljava/util/NavigableSet<TE;>;
    MethodParameters:
           Name  Flags
      toElement  
      inclusive  

  public java.util.NavigableSet<E> tailSet(E, boolean);
    descriptor: (Ljava/lang/Object;Z)Ljava/util/NavigableSet;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
        start local 1 // java.lang.Object fromElement
        start local 2 // boolean inclusive
         0: .line 1890
            aload 0 /* this */
            getfield com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:Ljava/util/NavigableSet;
            aload 1 /* fromElement */
            iload 2 /* inclusive */
            invokeinterface java.util.NavigableSet.tailSet:(Ljava/lang/Object;Z)Ljava/util/NavigableSet;
            invokestatic com.google.common.collect.Sets.unmodifiableNavigableSet:(Ljava/util/NavigableSet;)Ljava/util/NavigableSet;
            areturn
        end local 2 // boolean inclusive
        end local 1 // java.lang.Object fromElement
        end local 0 // com.google.common.collect.Sets$UnmodifiableNavigableSet this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    1     0         this  Lcom/google/common/collect/Sets$UnmodifiableNavigableSet<TE;>;
            0    1     1  fromElement  TE;
            0    1     2    inclusive  Z
    Signature: (TE;Z)Ljava/util/NavigableSet<TE;>;
    MethodParameters:
             Name  Flags
      fromElement  
      inclusive    

  protected java.lang.Object delegate();
    descriptor: ()Ljava/lang/Object;
    flags: (0x1044) ACC_PROTECTED, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:()Ljava/util/SortedSet;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  protected java.util.Collection delegate();
    descriptor: ()Ljava/util/Collection;
    flags: (0x1044) ACC_PROTECTED, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:()Ljava/util/SortedSet;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  protected java.util.Set delegate();
    descriptor: ()Ljava/util/Set;
    flags: (0x1044) ACC_PROTECTED, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual com.google.common.collect.Sets$UnmodifiableNavigableSet.delegate:()Ljava/util/SortedSet;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: <E:Ljava/lang/Object;>Lcom/google/common/collect/ForwardingSortedSet<TE;>;Ljava/util/NavigableSet<TE;>;Ljava/io/Serializable;
SourceFile: "Sets.java"
NestHost: com.google.common.collect.Sets
InnerClasses:
  final UnmodifiableNavigableSet = com.google.common.collect.Sets$UnmodifiableNavigableSet of com.google.common.collect.Sets