https://openjdk.java.net/ 
public interface org.graalvm.compiler.graph.Node$IndirectCanonicalization
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.graalvm.compiler.graph.Node$IndirectCanonicalization
  super_class: java.lang.Object
{
}
SourceFile: "Node.java"
NestHost: org.graalvm.compiler.graph.Node
InnerClasses:
  public abstract IndirectCanonicalization = org.graalvm.compiler.graph.Node$IndirectCanonicalization of org.graalvm.compiler.graph.Node