https://www.graalvm.org/ 
public interface com.oracle.truffle.tck.DebuggerTester$PositionPredicate
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.truffle.tck.DebuggerTester$PositionPredicate
  super_class: java.lang.Object
{
  public abstract boolean testLine(int);
    descriptor: (I)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      line  

  public abstract boolean testLineColumn(int, int);
    descriptor: (II)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
        Name  Flags
      line    
      column  
}
SourceFile: "DebuggerTester.java"
NestHost: com.oracle.truffle.tck.DebuggerTester
InnerClasses:
  public abstract PositionPredicate = com.oracle.truffle.tck.DebuggerTester$PositionPredicate of com.oracle.truffle.tck.DebuggerTester