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.RpcCallback<ParameterType>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.google.protobuf.RpcCallback
  super_class: java.lang.Object
{
  public abstract void run();
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (TParameterType;)V
    MethodParameters:
           Name  Flags
      parameter  
}
Signature: <ParameterType:Ljava/lang/Object;>Ljava/lang/Object;
SourceFile: "RpcCallback.java"