code: @Override
  	public Result<Void> deleteNS(AuthzTrans trans, HttpServletRequest req, HttpServletResponse resp, String ns) {
  		TimeTaken tt = trans.start(DELETE_NS + ' ' + ns, Env.SUB|Env.ALWAYS);
  		try {
  			Result<Void> rp = service.deleteNS(trans,ns);
  			switch(rp.status) {
  				case OK: 
  					setContentType(resp,nsRequestDF.getOutType());
  					return Result.ok();
  				default:
  					return Result.err(rp);
  			}
  		} catch (Exception e) {
  			trans.error().log(e,IN,DELETE_NS);
  			return Result.err(e);
  		} finally {
  			tt.done();
  		}
  	}
docs: /*
  (non-Javadoc)
  @see com.att.authz.facade.AuthzFacade#requestNS(com.att.authz.env.AuthzTrans, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)