https://openjdk.java.net/projects/openjfx/javafx-graphics/: OpenJFX JavaFX
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public interface com.sun.prism.ReadbackRenderTarget extends com.sun.prism.RenderTarget
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.prism.ReadbackRenderTarget
  super_class: java.lang.Object
{
  public abstract com.sun.prism.Texture getBackBuffer();
    descriptor: ()Lcom/sun/prism/Texture;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "ReadbackRenderTarget.java"