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.Tables$TransposeTable$1 implements com.google.common.base.Function<com.google.common.collect.Table$Cell<?, ?, ?>, com.google.common.collect.Table$Cell<?, ?, ?>>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.collect.Tables$TransposeTable$1
  super_class: java.lang.Object
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.Tables$TransposeTable$1 this
         0: .line 323
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.google.common.collect.Tables$TransposeTable$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Tables$TransposeTable$1;

  public com.google.common.collect.Table$Cell<?, ?, ?> apply(com.google.common.collect.Table$Cell<?, ?, ?>);
    descriptor: (Lcom/google/common/collect/Table$Cell;)Lcom/google/common/collect/Table$Cell;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // com.google.common.collect.Tables$TransposeTable$1 this
        start local 1 // com.google.common.collect.Table$Cell cell
         0: .line 326
            aload 1 /* cell */
            invokeinterface com.google.common.collect.Table$Cell.getColumnKey:()Ljava/lang/Object;
            aload 1 /* cell */
            invokeinterface com.google.common.collect.Table$Cell.getRowKey:()Ljava/lang/Object;
            aload 1 /* cell */
            invokeinterface com.google.common.collect.Table$Cell.getValue:()Ljava/lang/Object;
            invokestatic com.google.common.collect.Tables.immutableCell:(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Lcom/google/common/collect/Table$Cell;
            areturn
        end local 1 // com.google.common.collect.Table$Cell cell
        end local 0 // com.google.common.collect.Tables$TransposeTable$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Tables$TransposeTable$1;
            0    1     1  cell  Lcom/google/common/collect/Table$Cell<***>;
    Signature: (Lcom/google/common/collect/Table$Cell<***>;)Lcom/google/common/collect/Table$Cell<***>;
    MethodParameters:
      Name  Flags
      cell  

  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 com.google.common.collect.Table$Cell
            invokevirtual com.google.common.collect.Tables$TransposeTable$1.apply:(Lcom/google/common/collect/Table$Cell;)Lcom/google/common/collect/Table$Cell;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Lcom/google/common/base/Function<Lcom/google/common/collect/Table$Cell<***>;Lcom/google/common/collect/Table$Cell<***>;>;
SourceFile: "Tables.java"
EnclosingMethod: com.google.common.collect.Tables$TransposeTable
NestHost: com.google.common.collect.Tables
InnerClasses:
  public abstract Cell = com.google.common.collect.Table$Cell of com.google.common.collect.Table
  private TransposeTable = com.google.common.collect.Tables$TransposeTable of com.google.common.collect.Tables
  com.google.common.collect.Tables$TransposeTable$1