https://developers.google.com/protocol-buffers/protobuf-java/: Core Protocol Buffers library. Protocol Buffers are a way of encoding structured data in an efficient yet extensible format. 
public interface com.google.protobuf.AbstractMessage$BuilderParent
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.google.protobuf.AbstractMessage$BuilderParent
  super_class: java.lang.Object
{
  public abstract void markDirty();
    descriptor: ()V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "AbstractMessage.java"
NestHost: com.google.protobuf.AbstractMessage
InnerClasses:
  protected abstract BuilderParent = com.google.protobuf.AbstractMessage$BuilderParent of com.google.protobuf.AbstractMessage