http://www.eclipse.org/jetty: The Eclipse Jetty Project (Webtide) 
public interface org.eclipse.jetty.io.Connection$UpgradeTo
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.eclipse.jetty.io.Connection$UpgradeTo
  super_class: java.lang.Object
{
  public abstract void onUpgradeTo(java.nio.ByteBuffer);
    descriptor: (Ljava/nio/ByteBuffer;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
           Name  Flags
      prefilled  
}
SourceFile: "Connection.java"
NestHost: org.eclipse.jetty.io.Connection
InnerClasses:
  public abstract UpgradeTo = org.eclipse.jetty.io.Connection$UpgradeTo of org.eclipse.jetty.io.Connection