Show usage of VoiceGrant optional parameter incoming_allow (#725)

Author: maylonpedroso

rest/access-tokens/voice-example/voice-example.3.x.js

@@ -13,6 +13,7 @@ const identity = 'user';
 // Create a "grant" which enables a client to use Voice as a given user
 const voiceGrant = new VoiceGrant({
   outgoingApplicationSid: outgoingApplicationSid,
+  incomingAllow: true, // Optional: add to allow incoming calls
 });
 
 // Create an access token which we will sign and return to the client,

rest/access-tokens/voice-example/voice-example.5.x.cs

@@ -19,6 +19,9 @@ static void Main(string[] args)
         var grant = new VoiceGrant();
         grant.OutgoingApplicationSid = outgoingApplicationSid;
 
+        // Optional: add to allow incoming calls
+        grant.IncomingAllow = true;
+
         var grants = new HashSet<IGrant>
         {
             { grant }

rest/access-tokens/voice-example/voice-example.5.x.php

@@ -27,6 +27,9 @@
 $voiceGrant = new VoiceGrant();
 $voiceGrant->setOutgoingApplicationSid($outgoingApplicationSid);
 
+// Optional: add to allow incoming calls
+$voiceGrant->setIncomingAllow(true);
+
 // Add grant to token
 $token->addGrant($voiceGrant);
 

rest/access-tokens/voice-example/voice-example.5.x.rb

@@ -13,6 +13,9 @@
 grant = Twilio::JWT::AccessToken::VoiceGrant.new
 grant.outgoing_application_sid = outgoing_application_sid
 
+# Optional: add to allow incoming calls
+grant.incoming_allow = true
+
 # Create an Access Token
 token = Twilio::JWT::AccessToken.new(
   account_sid,

rest/access-tokens/voice-example/voice-example.6.x.py

@@ -14,7 +14,10 @@
 token = AccessToken(account_sid, api_key, api_secret, identity=identity)
 
 # Create a Voice grant and add to token
-voice_grant = VoiceGrant(outgoing_application_sid=outgoing_application_sid)
+voice_grant = VoiceGrant(
+    outgoing_application_sid=outgoing_application_sid,
+    incoming_allow=True, # Optional: add to allow incoming calls
+)
 token.add_grant(voice_grant)
 
 # Return token info as JSON

rest/access-tokens/voice-example/voice-example.7.x.java

@@ -16,6 +16,9 @@ public static void main(String[] args) {
     // Create Voice grant
     VoiceGrant grant = new VoiceGrant();
     grant.setOutgoingApplicationSid(outgoingApplicationSid);
+
+    // Optional: add to allow incoming calls
+    grant.setIncomingAllow(true);
 
     // Create access token
     AccessToken token = new AccessToken.Builder(