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. 
interface com.google.common.base.FinalizableReferenceQueue$FinalizerLoader
  minor version: 0
  major version: 59
  flags: flags: (0x0600) ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.google.common.base.FinalizableReferenceQueue$FinalizerLoader
  super_class: java.lang.Object
{
  public abstract java.lang.Class<?> loadFinalizer();
    descriptor: ()Ljava/lang/Class;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: ()Ljava/lang/Class<*>;
    RuntimeVisibleTypeAnnotations: 
      METHOD_RETURN
        org.checkerframework.checker.nullness.qual.Nullable()
}
SourceFile: "FinalizableReferenceQueue.java"
NestHost: com.google.common.base.FinalizableReferenceQueue
InnerClasses:
  abstract FinalizerLoader = com.google.common.base.FinalizableReferenceQueue$FinalizerLoader of com.google.common.base.FinalizableReferenceQueue