https://openjdk.java.net/ 
public interface sun.security.internal.interfaces.TlsMasterSecret extends javax.crypto.SecretKey
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.security.internal.interfaces.TlsMasterSecret
  super_class: java.lang.Object
{
  public static final long serialVersionUID;
    descriptor: J
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: -461748105810469773

  public abstract int getMajorVersion();
    descriptor: ()I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract int getMinorVersion();
    descriptor: ()I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "TlsMasterSecret.java"
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()