http://www.jboss.org/undertow-parent/undertow-core: Undertow (JBoss by Red Hat) 
public interface io.undertow.util.MultipartParser$PartHandler
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: io.undertow.util.MultipartParser$PartHandler
  super_class: java.lang.Object
{
  public abstract void beginPart(io.undertow.util.HeaderMap);
    descriptor: (Lio/undertow/util/HeaderMap;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      headers  final

  public abstract void data(java.nio.ByteBuffer);
    descriptor: (Ljava/nio/ByteBuffer;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException
    MethodParameters:
        Name  Flags
      buffer  final

  public abstract void endPart();
    descriptor: ()V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "MultipartParser.java"
NestHost: io.undertow.util.MultipartParser
InnerClasses:
  public abstract PartHandler = io.undertow.util.MultipartParser$PartHandler of io.undertow.util.MultipartParser