https://openjdk.java.net/ 
public interface com.sun.tools.internal.ws.wsdl.framework.ExtensionVisitor
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.tools.internal.ws.wsdl.framework.ExtensionVisitor
  super_class: java.lang.Object
{
  public abstract void preVisit(com.sun.tools.internal.ws.api.wsdl.TWSDLExtension);
    descriptor: (Lcom/sun/tools/internal/ws/api/wsdl/TWSDLExtension;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
           Name  Flags
      extension  

  public abstract void postVisit(com.sun.tools.internal.ws.api.wsdl.TWSDLExtension);
    descriptor: (Lcom/sun/tools/internal/ws/api/wsdl/TWSDLExtension;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
           Name  Flags
      extension  
}
SourceFile: "ExtensionVisitor.java"