How to add a SOAP header in an axis2 custom client-side handler?

[Franklin, Allen]

I am trying to figure out how to add a SOAP header in my client-side
handler.

I have the following axis1 code, but need an axis2 equivalent:

 

 
/***********************************************************************

    * Processes the header of a request message.  This method will add
the 

    * session header to the outgoing request.

    * 

    * @param context the message context associated with the request

 
**********************************************************************/

   private void invokeRequest( MessageContext context ) throws AxisFault

   { 

      Message msg = context.getRequestMessage();

      if (msg == null)

         throw new AxisFault( "Message not in context." );

            

      SOAPEnvelope env = msg.getSOAPEnvelope();

 

      SessionHeaderType sessionHeader =
WebServiceClientHelper.getThreadSessionHeader( );

 

      SOAPHeaderElement header = new SOAPHeaderElement(HEADER_NS,

                                                       HEADER_NAME,

                                                       sessionHeader);

      env.addHeader(header);

   }

 

The SessionHeaderType class was generated from a wsdl and contains
session credentials.

 

Any pointers to appropriate documentation on how to manipulate headers,
or sample code, would be appreciated.