parameters: (request, _id)
docstring: Get a list of versions for Signature. Should be an AJAX POST.
  
      :param request: Django request object (Required)
      :type request: :class:`django.http.HttpRequest`
      :param _id: The ObjectId of the Signature.
      :type _id: str
      :returns: :class:`django.http.HttpResponse`
docstring_summary: Get a list of versions for Signature. Should be an AJAX POST.
docstring_tokens: Get a list of versions for Signature . Should be an AJAX POST .
function: def get_signature_versions(request, _id):
      """
      Get a list of versions for Signature. Should be an AJAX POST.
  
      :param request: Django request object (Required)
      :type request: :class:`django.http.HttpRequest`
      :param _id: The ObjectId of the Signature.
      :type _id: str
      :returns: :class:`django.http.HttpResponse`
      """
  
      if request.method == 'POST':
          return HttpResponse(json.dumps(generate_signature_versions(_id)),
                              content_type="application/json")
      else:
          error = "Expected POST"
          return render(request, "error.html", {"error" : error })
function_tokens: def get_signature_versions ( request , _id ) : if request . method == 'POST' : return HttpResponse ( json . dumps ( generate_signature_versions ( _id ) ) , content_type = "application/json" ) else : error = "Expected POST" return render ( request , "error.html" , { "error" : error } )