final class it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet extends it.unimi.dsi.fastutil.ints.AbstractIntSortedSet
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet
  super_class: it.unimi.dsi.fastutil.ints.AbstractIntSortedSet
{
  final it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap this$0;
    descriptor: Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private void <init>(it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap);
    descriptor: (Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
         0: .line 1624
            aload 0 /* this */
            aload 1
            putfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            aload 0 /* this */
            invokespecial it.unimi.dsi.fastutil.ints.AbstractIntSortedSet.<init>:()V
            return
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;
    MethodParameters:
        Name  Flags
      this$0  final

  public it.unimi.dsi.fastutil.ints.IntListIterator iterator(int);
    descriptor: (I)Lit/unimi/dsi/fastutil/ints/IntListIterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
        start local 1 // int from
         0: .line 1627
            new it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeyIterator
            dup
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            iload 1 /* from */
            invokespecial it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeyIterator.<init>:(Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;I)V
            areturn
        end local 1 // int from
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;
            0    1     1  from  I
    MethodParameters:
      Name  Flags
      from  final

  public it.unimi.dsi.fastutil.ints.IntListIterator iterator();
    descriptor: ()Lit/unimi/dsi/fastutil/ints/IntListIterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
         0: .line 1631
            new it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeyIterator
            dup
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            invokespecial it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeyIterator.<init>:(Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;)V
            areturn
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;

  public void forEach(java.util.function.IntConsumer);
    descriptor: (Ljava/util/function/IntConsumer;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=4, args_size=2
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
        start local 1 // java.util.function.IntConsumer consumer
         0: .line 1636
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.containsNullKey:Z
            ifeq 2
         1: .line 1637
            aload 1 /* consumer */
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.key:[I
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.n:I
            iaload
            invokeinterface java.util.function.IntConsumer.accept:(I)V
         2: .line 1638
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.n:I
            istore 2 /* pos */
        start local 2 // int pos
         3: goto 7
         4: .line 1639
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.key:[I
            iload 2 /* pos */
            iaload
            istore 3 /* k */
        start local 3 // int k
         5: .line 1640
            iload 3 /* k */
            ifeq 7
         6: .line 1641
            aload 1 /* consumer */
            iload 3 /* k */
            invokeinterface java.util.function.IntConsumer.accept:(I)V
        end local 3 // int k
         7: .line 1638
      StackMap locals:
      StackMap stack:
            iload 2 /* pos */
            iinc 2 /* pos */ -1
            ifne 4
        end local 2 // int pos
         8: .line 1643
            return
        end local 1 // java.util.function.IntConsumer consumer
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    9     0      this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;
            0    9     1  consumer  Ljava/util/function/IntConsumer;
            3    8     2       pos  I
            5    7     3         k  I
    MethodParameters:
          Name  Flags
      consumer  final

  public int size();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
         0: .line 1646
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.size:I
            ireturn
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;

  public boolean contains(int);
    descriptor: (I)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
        start local 1 // int k
         0: .line 1650
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            iload 1 /* k */
            invokevirtual it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.containsKey:(I)Z
            ireturn
        end local 1 // int k
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;
            0    1     1     k  I
    MethodParameters:
      Name  Flags
      k     

  public boolean remove(int);
    descriptor: (I)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
        start local 1 // int k
         0: .line 1654
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.size:I
            istore 2 /* oldSize */
        start local 2 // int oldSize
         1: .line 1655
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            iload 1 /* k */
            invokevirtual it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.remove:(I)F
            pop
         2: .line 1656
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.size:I
            iload 2 /* oldSize */
            if_icmpeq 3
            iconst_1
            ireturn
      StackMap locals: int
      StackMap stack:
         3: iconst_0
            ireturn
        end local 2 // int oldSize
        end local 1 // int k
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;
            0    4     1        k  I
            1    4     2  oldSize  I
    MethodParameters:
      Name  Flags
      k     

  public void clear();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
         0: .line 1660
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            invokevirtual it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.clear:()V
         1: .line 1661
            return
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;

  public int firstInt();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
         0: .line 1664
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.size:I
            ifne 2
         1: .line 1665
            new java.util.NoSuchElementException
            dup
            invokespecial java.util.NoSuchElementException.<init>:()V
            athrow
         2: .line 1666
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.key:[I
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.first:I
            iaload
            ireturn
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;

  public int lastInt();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
         0: .line 1670
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.size:I
            ifne 2
         1: .line 1671
            new java.util.NoSuchElementException
            dup
            invokespecial java.util.NoSuchElementException.<init>:()V
            athrow
         2: .line 1672
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.key:[I
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.this$0:Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap;
            getfield it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap.last:I
            iaload
            ireturn
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;

  public it.unimi.dsi.fastutil.ints.IntComparator comparator();
    descriptor: ()Lit/unimi/dsi/fastutil/ints/IntComparator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
         0: .line 1676
            aconst_null
            areturn
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;

  public it.unimi.dsi.fastutil.ints.IntSortedSet tailSet(int);
    descriptor: (I)Lit/unimi/dsi/fastutil/ints/IntSortedSet;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
        start local 1 // int from
         0: .line 1680
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 1 // int from
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;
            0    1     1  from  I
    MethodParameters:
      Name  Flags
      from  

  public it.unimi.dsi.fastutil.ints.IntSortedSet headSet(int);
    descriptor: (I)Lit/unimi/dsi/fastutil/ints/IntSortedSet;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
        start local 1 // int to
         0: .line 1684
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 1 // int to
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;
            0    1     1    to  I
    MethodParameters:
      Name  Flags
      to    

  public it.unimi.dsi.fastutil.ints.IntSortedSet subSet(int, int);
    descriptor: (II)Lit/unimi/dsi/fastutil/ints/IntSortedSet;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
        start local 1 // int from
        start local 2 // int to
         0: .line 1688
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 2 // int to
        end local 1 // int from
        end local 0 // it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/ints/Int2FloatLinkedOpenHashMap$KeySet;
            0    1     1  from  I
            0    1     2    to  I
    MethodParameters:
      Name  Flags
      from  
      to    

  public it.unimi.dsi.fastutil.ints.IntBidirectionalIterator iterator();
    descriptor: ()Lit/unimi/dsi/fastutil/ints/IntBidirectionalIterator;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.iterator:()Lit/unimi/dsi/fastutil/ints/IntListIterator;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public java.util.Iterator iterator();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.iterator:()Lit/unimi/dsi/fastutil/ints/IntListIterator;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public it.unimi.dsi.fastutil.ints.IntIterator iterator();
    descriptor: ()Lit/unimi/dsi/fastutil/ints/IntIterator;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.iterator:()Lit/unimi/dsi/fastutil/ints/IntListIterator;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public it.unimi.dsi.fastutil.ints.IntBidirectionalIterator iterator(int);
    descriptor: (I)Lit/unimi/dsi/fastutil/ints/IntBidirectionalIterator;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            iload 1
            invokevirtual it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.iterator:(I)Lit/unimi/dsi/fastutil/ints/IntListIterator;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public java.util.Comparator comparator();
    descriptor: ()Ljava/util/Comparator;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet.comparator:()Lit/unimi/dsi/fastutil/ints/IntComparator;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "Int2FloatLinkedOpenHashMap.java"
NestHost: it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap
InnerClasses:
  private final KeyIterator = it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeyIterator of it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap
  private final KeySet = it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap$KeySet of it.unimi.dsi.fastutil.ints.Int2FloatLinkedOpenHashMap