https://github.com/google/guava/guava: Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. 
final class com.google.common.base.MoreObjects$ToStringHelper$ValueHolder
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.google.common.base.MoreObjects$ToStringHelper$ValueHolder
  super_class: java.lang.Object
{
  java.lang.String name;
    descriptor: Ljava/lang/String;
    flags: (0x0000) 
    RuntimeVisibleTypeAnnotations: 
      FIELD
        org.checkerframework.checker.nullness.qual.Nullable()

  java.lang.Object value;
    descriptor: Ljava/lang/Object;
    flags: (0x0000) 
    RuntimeVisibleTypeAnnotations: 
      FIELD
        org.checkerframework.checker.nullness.qual.Nullable()

  com.google.common.base.MoreObjects$ToStringHelper$ValueHolder next;
    descriptor: Lcom/google/common/base/MoreObjects$ToStringHelper$ValueHolder;
    flags: (0x0000) 
    RuntimeVisibleTypeAnnotations: 
      FIELD
        org.checkerframework.checker.nullness.qual.Nullable()

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.base.MoreObjects$ToStringHelper$ValueHolder this
         0: .line 382
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.google.common.base.MoreObjects$ToStringHelper$ValueHolder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/base/MoreObjects$ToStringHelper$ValueHolder;
}
SourceFile: "MoreObjects.java"
NestHost: com.google.common.base.MoreObjects
InnerClasses:
  public final ToStringHelper = com.google.common.base.MoreObjects$ToStringHelper of com.google.common.base.MoreObjects
  private final ValueHolder = com.google.common.base.MoreObjects$ToStringHelper$ValueHolder of com.google.common.base.MoreObjects$ToStringHelper