https://openjdk.java.net/ 
public interface javax.imageio.event.IIOReadWarningListener extends java.util.EventListener
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.imageio.event.IIOReadWarningListener
  super_class: java.lang.Object
{
  public abstract void warningOccurred(javax.imageio.ImageReader, java.lang.String);
    descriptor: (Ljavax/imageio/ImageReader;Ljava/lang/String;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      source   
      warning  
}
SourceFile: "IIOReadWarningListener.java"