https://openjdk.java.net/ 
public interface jdk.internal.misc.JavaNetURLClassLoaderAccess
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: jdk.internal.misc.JavaNetURLClassLoaderAccess
  super_class: java.lang.Object
{
  public abstract java.security.AccessControlContext getAccessControlContext(java.net.URLClassLoader);
    descriptor: (Ljava/net/URLClassLoader;)Ljava/security/AccessControlContext;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      u     
}
SourceFile: "JavaNetURLClassLoaderAccess.java"