https://openjdk.java.net/ 
public interface sun.security.util.BiConsumer<T, U>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.security.util.BiConsumer
  super_class: java.lang.Object
{
  public abstract void accept(T, );
    descriptor: (Ljava/lang/Object;Ljava/lang/Object;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (TT;TU;)V
    MethodParameters:
      Name  Flags
      t     
      u     
}
Signature: <T:Ljava/lang/Object;U:Ljava/lang/Object;>Ljava/lang/Object;
SourceFile: "BiConsumer.java"