https://github.com/oracle/graal: GraalVM is an ecosystem for compiling and running applications written in multiple languages. GraalVM removes the isolation between programming languages and enables interoperability in a shared runtime. 
class org.graalvm.options.OptionDescriptors$1 implements org.graalvm.options.OptionDescriptors
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.graalvm.options.OptionDescriptors$1
  super_class: java.lang.Object
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.options.OptionDescriptors$1 this
         0: .line 64
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.graalvm.options.OptionDescriptors$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/options/OptionDescriptors$1;

  public java.util.Iterator<org.graalvm.options.OptionDescriptor> iterator();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.options.OptionDescriptors$1 this
         0: .line 67
            invokestatic java.util.Collections.emptyList:()Ljava/util/List;
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            areturn
        end local 0 // org.graalvm.options.OptionDescriptors$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/options/OptionDescriptors$1;
    Signature: ()Ljava/util/Iterator<Lorg/graalvm/options/OptionDescriptor;>;

  public org.graalvm.options.OptionDescriptor get(java.lang.String);
    descriptor: (Ljava/lang/String;)Lorg/graalvm/options/OptionDescriptor;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // org.graalvm.options.OptionDescriptors$1 this
        start local 1 // java.lang.String key
         0: .line 71
            aconst_null
            areturn
        end local 1 // java.lang.String key
        end local 0 // org.graalvm.options.OptionDescriptors$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/options/OptionDescriptors$1;
            0    1     1   key  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      key   
}
SourceFile: "OptionDescriptors.java"
EnclosingMethod: org.graalvm.options.OptionDescriptors
NestHost: org.graalvm.options.OptionDescriptors
InnerClasses:
  org.graalvm.options.OptionDescriptors$1