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.reflect.MethodDelegate$MethodDelegateKey
  minor version: 0
  major version: 59
  flags: flags: (0x0600) ACC_INTERFACE, ACC_ABSTRACT
  this_class: net.sf.cglib.reflect.MethodDelegate$MethodDelegateKey
  super_class: java.lang.Object
{
  public abstract java.lang.Object newInstance(java.lang.Class, java.lang.String, java.lang.Class);
    descriptor: (Ljava/lang/Class;Ljava/lang/String;Ljava/lang/Class;)Ljava/lang/Object;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
               Name  Flags
      delegateClass  
      methodName     
      iface          
}
SourceFile: "MethodDelegate.java"
NestHost: net.sf.cglib.reflect.MethodDelegate
InnerClasses:
  abstract MethodDelegateKey = net.sf.cglib.reflect.MethodDelegate$MethodDelegateKey of net.sf.cglib.reflect.MethodDelegate