https://openjdk.java.net/ 
public interface sun.net.ProgressMeteringPolicy
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.net.ProgressMeteringPolicy
  super_class: java.lang.Object
{
  public abstract boolean shouldMeterInput(java.net.URL, java.lang.String);
    descriptor: (Ljava/net/URL;Ljava/lang/String;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
        Name  Flags
      url     
      method  

  public abstract int getProgressUpdateThreshold();
    descriptor: ()I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "ProgressMeteringPolicy.java"