https://www.graalvm.org/ 
class com.oracle.truffle.polyglot.PolyglotLanguageContext$1 implements java.util.function.Function<java.lang.Class<?>, com.oracle.truffle.polyglot.PolyglotValue>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.polyglot.PolyglotLanguageContext$1
  super_class: java.lang.Object
{
  final com.oracle.truffle.polyglot.PolyglotLanguageContext this$0;
    descriptor: Lcom/oracle/truffle/polyglot/PolyglotLanguageContext;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private final java.lang.Object val$guestValue;
    descriptor: Ljava/lang/Object;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.oracle.truffle.polyglot.PolyglotLanguageContext, java.lang.Object);
    descriptor: (Lcom/oracle/truffle/polyglot/PolyglotLanguageContext;Ljava/lang/Object;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.oracle.truffle.polyglot.PolyglotLanguageContext$1 this
         0: .line 828
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.polyglot.PolyglotLanguageContext$1.this$0:Lcom/oracle/truffle/polyglot/PolyglotLanguageContext;
            aload 0 /* this */
            aload 2
            putfield com.oracle.truffle.polyglot.PolyglotLanguageContext$1.val$guestValue:Ljava/lang/Object;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.polyglot.PolyglotLanguageContext$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/polyglot/PolyglotLanguageContext$1;
    MethodParameters:
                Name  Flags
      this$0          final
      val$guestValue  final

  public com.oracle.truffle.polyglot.PolyglotValue apply(java.lang.Class<?>);
    descriptor: (Ljava/lang/Class;)Lcom/oracle/truffle/polyglot/PolyglotValue;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // com.oracle.truffle.polyglot.PolyglotLanguageContext$1 this
        start local 1 // java.lang.Class t
         0: .line 830
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotLanguageContext$1.this$0:Lcom/oracle/truffle/polyglot/PolyglotLanguageContext;
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotLanguageContext$1.val$guestValue:Ljava/lang/Object;
            checkcast com.oracle.truffle.api.interop.TruffleObject
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotLanguageContext$1.val$guestValue:Ljava/lang/Object;
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            invokestatic com.oracle.truffle.polyglot.PolyglotValue.createInteropValue:(Lcom/oracle/truffle/polyglot/PolyglotLanguageContext;Lcom/oracle/truffle/api/interop/TruffleObject;Ljava/lang/Class;)Lcom/oracle/truffle/polyglot/PolyglotValue;
            areturn
        end local 1 // java.lang.Class t
        end local 0 // com.oracle.truffle.polyglot.PolyglotLanguageContext$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/polyglot/PolyglotLanguageContext$1;
            0    1     1     t  Ljava/lang/Class<*>;
    Signature: (Ljava/lang/Class<*>;)Lcom/oracle/truffle/polyglot/PolyglotValue;
    MethodParameters:
      Name  Flags
      t     

  public java.lang.Object apply(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    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.Class
            invokevirtual com.oracle.truffle.polyglot.PolyglotLanguageContext$1.apply:(Ljava/lang/Class;)Lcom/oracle/truffle/polyglot/PolyglotValue;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Ljava/util/function/Function<Ljava/lang/Class<*>;Lcom/oracle/truffle/polyglot/PolyglotValue;>;
SourceFile: "PolyglotLanguageContext.java"
EnclosingMethod: com.oracle.truffle.polyglot.PolyglotLanguageContext.lookupValueCache:(Ljava/lang/Object;)Lcom/oracle/truffle/polyglot/PolyglotValue;
NestHost: com.oracle.truffle.polyglot.PolyglotLanguageContext
InnerClasses:
  com.oracle.truffle.polyglot.PolyglotLanguageContext$1