https://github.com/square/okhttp/okhttp: An HTTP+HTTP/2 client for Android and Java applications 
public interface okhttp3.Callback
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: okhttp3.Callback
  super_class: java.lang.Object
{
  public abstract void onFailure(okhttp3.Call, java.io.IOException);
    descriptor: (Lokhttp3/Call;Ljava/io/IOException;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      call  
      e     

  public abstract void onResponse(okhttp3.Call, okhttp3.Response);
    descriptor: (Lokhttp3/Call;Lokhttp3/Response;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException
    MethodParameters:
          Name  Flags
      call      
      response  
}
SourceFile: "Callback.java"