Automatically add a template body part when creating a template message and add support for passing from/to/cc/bcc as parameters

      #set ($from = $services.mailsender.configuration.fromAddress)
      #if ("$!from" == '')
        #set ($from = "no-reply@${request.serverName}")
      #end
      #set ($mailTemplateReference = $services.model.createDocumentReference('', 'XWiki', 'ResetPasswordMailContent'))
      #set ($mailParameters = {'language' : $xcontext.language})
      #set ($message = $services.mailsender.createMessage('template', $mailTemplateReference, $mailParameters))
      #set ($discard = $message.setFrom($from))
      #set ($discard = $message.addRecipients('to', $userEmail))
      #set ($discard = $message.addPart("xwiki/template", $mailTemplateReference, $mailParameters))
      #set ($discard = $message.send())

      #set ($from = $services.mailsender.configuration.fromAddress)
      #if ("$!from" == '')
        #set ($from = "no-reply@${request.serverName}")
      #end
      #set ($mailTemplateReference = $services.model.createDocumentReference('', 'XWiki', 'ResetPasswordMailContent'))
      #set ($mailParameters = {'language' : $xcontext.language})
      #set ($message = $services.mailtemplatesender.createMessage($from, $userEmail, $mailTemplateReference, $mailParameters))
      #set ($discard = $message.send())