@@ -221,13 +221,22 @@ def test_api(self):
221221        } 
222222        """ 
223223
224+         # This is an optional feature; you can still make a request without setting it. 
225+         custom_headers_map  =  {"category" : Category .US_STOCK .name }
226+         api .order .add_custom_headers (custom_headers_map )
224227        res  =  api .order .place_order (stock_order ['account_id' ], ** stock_order ['stock_order' ])
228+         api .order .remove_custom_headers ()
225229        if  res .status_code  ==  200 :
226230            print ('place order res:' , res .json ())
227231        res  =  api .order .replace_order (stock_order ['account_id' ], ** stock_order ['stock_order' ])
228232        if  res .status_code  ==  200 :
229233            print ('replace order res:' , res .json ())
234+ 
235+         # This is an optional feature; you can still make a request without setting it. 
236+         custom_headers_map  =  {"category" : Category .US_STOCK .name }
237+         api .order .add_custom_headers (custom_headers_map )
230238        res  =  api .order .place_order_v2 (stock_order ['account_id' ], stock_order ['stock_order' ])
239+         api .order .remove_custom_headers ()
231240        if  res .status_code  ==  200 :
232241            print ('place order v2 res:' , res .json ())
233242        res  =  api .order .replace_order_v2 (stock_order ['account_id' ], stock_order ['stock_order' ])
@@ -298,7 +307,11 @@ def test_api(self):
298307        sleep (5 )
299308
300309        # place 
310+         # This is an optional feature; you can still make a request without setting it. 
311+         custom_headers_map  =  {"category" : Category .US_OPTION .name }
312+         api .order .add_custom_headers (custom_headers_map )
301313        res  =  api .order .place_option (account_id , option_new_orders )
314+         api .order .remove_custom_headers ()
302315        if  res .status_code  ==  200 :
303316            print ("place option="  +  json .dumps (res .json (), indent = 4 ))
304317        sleep (5 )
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