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. 
class com.google.common.collect.Synchronized$SynchronizedTable$2 implements com.google.common.base.Function<java.util.Map<R, V>, java.util.Map<R, V>>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.collect.Synchronized$SynchronizedTable$2
  super_class: java.lang.Object
{
  final com.google.common.collect.Synchronized$SynchronizedTable this$1;
    descriptor: Lcom/google/common/collect/Synchronized$SynchronizedTable;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.google.common.collect.Synchronized$SynchronizedTable);
    descriptor: (Lcom/google/common/collect/Synchronized$SynchronizedTable;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.Synchronized$SynchronizedTable$2 this
         0: .line 2135
            aload 0 /* this */
            aload 1
            putfield com.google.common.collect.Synchronized$SynchronizedTable$2.this$1:Lcom/google/common/collect/Synchronized$SynchronizedTable;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.google.common.collect.Synchronized$SynchronizedTable$2 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Synchronized$SynchronizedTable$2;
    MethodParameters:
        Name  Flags
      this$0  final

  public java.util.Map<R, V> apply(java.util.Map<R, V>);
    descriptor: (Ljava/util/Map;)Ljava/util/Map;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.Synchronized$SynchronizedTable$2 this
        start local 1 // java.util.Map t
         0: .line 2138
            aload 1 /* t */
            aload 0 /* this */
            getfield com.google.common.collect.Synchronized$SynchronizedTable$2.this$1:Lcom/google/common/collect/Synchronized$SynchronizedTable;
            getfield com.google.common.collect.Synchronized$SynchronizedTable.mutex:Ljava/lang/Object;
            invokestatic com.google.common.collect.Synchronized.map:(Ljava/util/Map;Ljava/lang/Object;)Ljava/util/Map;
            areturn
        end local 1 // java.util.Map t
        end local 0 // com.google.common.collect.Synchronized$SynchronizedTable$2 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Synchronized$SynchronizedTable$2;
            0    1     1     t  Ljava/util/Map<TR;TV;>;
    Signature: (Ljava/util/Map<TR;TV;>;)Ljava/util/Map<TR;TV;>;
    MethodParameters:
      Name  Flags
      t     

  public java.lang.Object apply(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast java.util.Map
            invokevirtual com.google.common.collect.Synchronized$SynchronizedTable$2.apply:(Ljava/util/Map;)Ljava/util/Map;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Lcom/google/common/base/Function<Ljava/util/Map<TR;TV;>;Ljava/util/Map<TR;TV;>;>;
SourceFile: "Synchronized.java"
EnclosingMethod: com.google.common.collect.Synchronized$SynchronizedTable.columnMap:()Ljava/util/Map;
NestHost: com.google.common.collect.Synchronized
InnerClasses:
  private final SynchronizedTable = com.google.common.collect.Synchronized$SynchronizedTable of com.google.common.collect.Synchronized
  com.google.common.collect.Synchronized$SynchronizedTable$2