https://www.graalvm.org/ 
abstract class org.graalvm.compiler.truffle.test.AbstractSplittingStrategyTest$SplittingTestNode extends com.oracle.truffle.api.nodes.Node
  minor version: 0
  major version: 59
  flags: flags: (0x0420) ACC_SUPER, ACC_ABSTRACT
  this_class: org.graalvm.compiler.truffle.test.AbstractSplittingStrategyTest$SplittingTestNode
  super_class: com.oracle.truffle.api.nodes.Node
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.truffle.test.AbstractSplittingStrategyTest$SplittingTestNode this
         0: .line 195
            aload 0 /* this */
            invokespecial com.oracle.truffle.api.nodes.Node.<init>:()V
            return
        end local 0 // org.graalvm.compiler.truffle.test.AbstractSplittingStrategyTest$SplittingTestNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/compiler/truffle/test/AbstractSplittingStrategyTest$SplittingTestNode;

  public abstract java.lang.Object execute(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      frame  
}
SourceFile: "AbstractSplittingStrategyTest.java"
NestHost: org.graalvm.compiler.truffle.test.AbstractSplittingStrategyTest
InnerClasses:
  abstract SplittingTestNode = org.graalvm.compiler.truffle.test.AbstractSplittingStrategyTest$SplittingTestNode of org.graalvm.compiler.truffle.test.AbstractSplittingStrategyTest
    RuntimeInvisibleAnnotations: 
      com.oracle.truffle.api.dsl.ReportPolymorphism()