https://source.android.com/ 
public interface android.webkit.WebView$PictureListener
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: android.webkit.WebView$PictureListener
  super_class: java.lang.Object
{
  public abstract void onNewPicture(android.webkit.WebView, android.graphics.Picture);
    descriptor: (Landroid/webkit/WebView;Landroid/graphics/Picture;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()
    MethodParameters:
         Name  Flags
      view     
      picture  
}
SourceFile: "WebView.java"
NestHost: android.webkit.WebView
InnerClasses:
  public abstract PictureListener = android.webkit.WebView$PictureListener of android.webkit.WebView
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()