While you are reading this section, one thing is certain: you don't need to configure the firebase SDK anymore, because we have already configured it in the previous section. We simply need to add the dependency now.
In the project-level build.gradle, inside buildscripts | dependencies, add the following line:
Now, open the app-level build.gradle and insert the following line:
apply plugin: 'com.google.firebase.firebase-perf'
After the plugin is configured, add the following line in the app-level build.gradle dependencies block:
Recompile your app. Automatic traces and HTTP/S network requests are now monitored.