https://www.graalvm.org/ 
public interface org.graalvm.compiler.truffle.test.DFAPartialEvaluationTest$ByteMatcher
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.graalvm.compiler.truffle.test.DFAPartialEvaluationTest$ByteMatcher
  super_class: java.lang.Object
{
  public abstract boolean match(byte);
    descriptor: (B)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      c     
}
SourceFile: "DFAPartialEvaluationTest.java"
NestHost: org.graalvm.compiler.truffle.test.DFAPartialEvaluationTest
InnerClasses:
  public abstract ByteMatcher = org.graalvm.compiler.truffle.test.DFAPartialEvaluationTest$ByteMatcher of org.graalvm.compiler.truffle.test.DFAPartialEvaluationTest