https://www.graalvm.org/ 
class com.oracle.truffle.polyglot.PolyglotManagement$2 implements java.util.function.Predicate<java.lang.String>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.polyglot.PolyglotManagement$2
  super_class: java.lang.Object
{
  final com.oracle.truffle.polyglot.PolyglotManagement this$0;
    descriptor: Lcom/oracle/truffle/polyglot/PolyglotManagement;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private final java.util.function.Predicate val$rootFilter;
    descriptor: Ljava/util/function/Predicate;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  private final com.oracle.truffle.polyglot.PolyglotManagement$ListenerImpl val$config;
    descriptor: Lcom/oracle/truffle/polyglot/PolyglotManagement$ListenerImpl;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.oracle.truffle.polyglot.PolyglotManagement, java.util.function.Predicate, com.oracle.truffle.polyglot.PolyglotManagement$ListenerImpl);
    descriptor: (Lcom/oracle/truffle/polyglot/PolyglotManagement;Ljava/util/function/Predicate;Lcom/oracle/truffle/polyglot/PolyglotManagement$ListenerImpl;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=4, args_size=4
        start local 0 // com.oracle.truffle.polyglot.PolyglotManagement$2 this
         0: .line 139
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.polyglot.PolyglotManagement$2.this$0:Lcom/oracle/truffle/polyglot/PolyglotManagement;
            aload 0 /* this */
            aload 2
            putfield com.oracle.truffle.polyglot.PolyglotManagement$2.val$rootFilter:Ljava/util/function/Predicate;
            aload 0 /* this */
            aload 3
            putfield com.oracle.truffle.polyglot.PolyglotManagement$2.val$config:Lcom/oracle/truffle/polyglot/PolyglotManagement$ListenerImpl;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.polyglot.PolyglotManagement$2 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/polyglot/PolyglotManagement$2;
    MethodParameters:
                Name  Flags
      this$0          final
      val$rootFilter  final
      val$config      final

  public boolean test(java.lang.String);
    descriptor: (Ljava/lang/String;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // com.oracle.truffle.polyglot.PolyglotManagement$2 this
        start local 1 // java.lang.String s
         0: .line 142
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotManagement$2.val$rootFilter:Ljava/util/function/Predicate;
            aload 1 /* s */
            invokeinterface java.util.function.Predicate.test:(Ljava/lang/Object;)Z
         1: ireturn
         2: .line 143
      StackMap locals:
      StackMap stack: java.lang.Throwable
            astore 2 /* e */
        start local 2 // java.lang.Throwable e
         3: .line 144
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotManagement$2.val$config:Lcom/oracle/truffle/polyglot/PolyglotManagement$ListenerImpl;
            getfield com.oracle.truffle.polyglot.PolyglotManagement$ListenerImpl.closing:Z
            ifeq 5
         4: .line 146
            iconst_0
            ireturn
         5: .line 148
      StackMap locals: java.lang.Throwable
      StackMap stack:
            new com.oracle.truffle.polyglot.HostException
            dup
            aload 2 /* e */
            invokespecial com.oracle.truffle.polyglot.HostException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 2 // java.lang.Throwable e
        end local 1 // java.lang.String s
        end local 0 // com.oracle.truffle.polyglot.PolyglotManagement$2 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lcom/oracle/truffle/polyglot/PolyglotManagement$2;
            0    6     1     s  Ljava/lang/String;
            3    6     2     e  Ljava/lang/Throwable;
      Exception table:
        from    to  target  type
           0     1       2  Class java.lang.Throwable
    MethodParameters:
      Name  Flags
      s     

  public boolean test(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast java.lang.String
            invokevirtual com.oracle.truffle.polyglot.PolyglotManagement$2.test:(Ljava/lang/String;)Z
            ireturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Ljava/util/function/Predicate<Ljava/lang/String;>;
SourceFile: "PolyglotManagement.java"
EnclosingMethod: com.oracle.truffle.polyglot.PolyglotManagement.attachExecutionListener:(Lorg/graalvm/polyglot/Engine;Ljava/util/function/Consumer;Ljava/util/function/Consumer;ZZZLjava/util/function/Predicate;Ljava/util/function/Predicate;ZZZ)Ljava/lang/Object;
NestHost: com.oracle.truffle.polyglot.PolyglotManagement
InnerClasses:
  com.oracle.truffle.polyglot.PolyglotManagement$2
  ListenerImpl = com.oracle.truffle.polyglot.PolyglotManagement$ListenerImpl of com.oracle.truffle.polyglot.PolyglotManagement