https://source.android.com/ 
public interface android.widget.Advanceable
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: android.widget.Advanceable
  super_class: java.lang.Object
{
  public abstract void advance();
    descriptor: ()V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract void fyiWillBeAdvancedByHostKThx();
    descriptor: ()V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "Advanceable.java"