Clarification on using the command `npm create sanity@latest` in a NextJS web app.

Hello, apologies if this has been asked already.I am building a web app using NextJS and I want to utilize Sanity. It says the command

npm create sanity@latest

Is that correct? It sounds like a command for an initial setup for a project, not for a project that already exists. But that just may be how I'm reading this.

this will setup sanity studio in your nextjs app. if you already have that setup then you just need to start the dev server in studio.

its not going to create a NextJS application its going to install and config studio into your existing project.

thank you friend