https://github.com/cglib/cglib/cglib: cglib is a powerful, high performance and quality Code Generation Library, It is used to extend JAVA classes and implements interfaces at runtime. 
class net.sf.cglib.core.internal.LoadingCache$1 implements net.sf.cglib.core.internal.Function
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: net.sf.cglib.core.internal.LoadingCache$1
  super_class: java.lang.Object
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // net.sf.cglib.core.internal.LoadingCache$1 this
         0: .line 10
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // net.sf.cglib.core.internal.LoadingCache$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lnet/sf/cglib/core/internal/LoadingCache$1;

  public java.lang.Object apply(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // net.sf.cglib.core.internal.LoadingCache$1 this
        start local 1 // java.lang.Object key
         0: .line 12
            aload 1 /* key */
            areturn
        end local 1 // java.lang.Object key
        end local 0 // net.sf.cglib.core.internal.LoadingCache$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lnet/sf/cglib/core/internal/LoadingCache$1;
            0    1     1   key  Ljava/lang/Object;
    MethodParameters:
      Name  Flags
      key   
}
SourceFile: "LoadingCache.java"
EnclosingMethod: net.sf.cglib.core.internal.LoadingCache
NestHost: net.sf.cglib.core.internal.LoadingCache
InnerClasses:
  net.sf.cglib.core.internal.LoadingCache$1