Azure Functions - Precompiled C# function with TimerTrigger

I want to have a precompiled Azure Function that is based off a timer trigger.

What nuget package do I need to install, or what dll do I need to reference to get access to the TimerInfo class? I can't find it anywhere.

What is Azure function C#?

Azure Functions lets you use Visual Studio to create local C# function projects and then easily publish this project to run in a scalable serverless environment in Azure.

Can we write Azure functions in VS code?

Visual Studio Code integrates with Azure Functions Core tools to let you run this project on your local development computer before you publish to Azure. To call your function, press F5 to start the function app project. The Terminal panel displays the output from Core Tools.

TimerInfo is defined in package Microsoft.Azure.WebJobs.Extensions under namespace Microsoft.Azure.WebJobs.