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.ValueOrBuilder extends com.google.protobuf.MessageOrBuilder
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.google.protobuf.ValueOrBuilder
  super_class: java.lang.Object
{
  public abstract int getNullValueValue();
    descriptor: ()I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract com.google.protobuf.NullValue getNullValue();
    descriptor: ()Lcom/google/protobuf/NullValue;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract double getNumberValue();
    descriptor: ()D
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract java.lang.String getStringValue();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract com.google.protobuf.ByteString getStringValueBytes();
    descriptor: ()Lcom/google/protobuf/ByteString;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract boolean getBoolValue();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract boolean hasStructValue();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract com.google.protobuf.Struct getStructValue();
    descriptor: ()Lcom/google/protobuf/Struct;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract com.google.protobuf.StructOrBuilder getStructValueOrBuilder();
    descriptor: ()Lcom/google/protobuf/StructOrBuilder;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract boolean hasListValue();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract com.google.protobuf.ListValue getListValue();
    descriptor: ()Lcom/google/protobuf/ListValue;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract com.google.protobuf.ListValueOrBuilder getListValueOrBuilder();
    descriptor: ()Lcom/google/protobuf/ListValueOrBuilder;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract com.google.protobuf.Value$KindCase getKindCase();
    descriptor: ()Lcom/google/protobuf/Value$KindCase;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "ValueOrBuilder.java"
InnerClasses:
  public final KindCase = com.google.protobuf.Value$KindCase of com.google.protobuf.Value