https://openjdk.java.net/ 
public interface javax.imageio.spi.RegisterableService
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.imageio.spi.RegisterableService
  super_class: java.lang.Object
{
  public abstract void onRegistration(javax.imageio.spi.ServiceRegistry, java.lang.Class<?>);
    descriptor: (Ljavax/imageio/spi/ServiceRegistry;Ljava/lang/Class;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (Ljavax/imageio/spi/ServiceRegistry;Ljava/lang/Class<*>;)V
    MethodParameters:
          Name  Flags
      registry  
      category  

  public abstract void onDeregistration(javax.imageio.spi.ServiceRegistry, java.lang.Class<?>);
    descriptor: (Ljavax/imageio/spi/ServiceRegistry;Ljava/lang/Class;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (Ljavax/imageio/spi/ServiceRegistry;Ljava/lang/Class<*>;)V
    MethodParameters:
          Name  Flags
      registry  
      category  
}
SourceFile: "RegisterableService.java"