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. 
interface net.sf.cglib.core.ClassesKey$Key
  minor version: 0
  major version: 59
  flags: flags: (0x0600) ACC_INTERFACE, ACC_ABSTRACT
  this_class: net.sf.cglib.core.ClassesKey$Key
  super_class: java.lang.Object
{
  public abstract java.lang.Object newInstance(java.lang.Object[]);
    descriptor: ([Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      array  
}
SourceFile: "ClassesKey.java"
NestHost: net.sf.cglib.core.ClassesKey
InnerClasses:
  abstract Key = net.sf.cglib.core.ClassesKey$Key of net.sf.cglib.core.ClassesKey