<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width,initial-scale=1,viewport-fit=cover"><link rel="icon" href="/sdk_messaging_ios/ZendeskSDKMessaging/2.18.0/favicon.ico"><link rel="mask-icon" href="/sdk_messaging_ios/ZendeskSDKMessaging/2.18.0/favicon.svg" color="#333333"><title>Documentation</title><script>var baseUrl = "/sdk_messaging_ios/ZendeskSDKMessaging/2.18.0/"</script><link href="/sdk_messa