You can run the example app by pressing the run (▶) button.

Step 2d: Add Linux platform code (.h+.cc)

We recommend you edit the Linux code using an IDE with
C++ integration. The instructions below are for
Visual Studio Code with the “C/C++” and “CMake” extensions
installed, but can be adjusted for other IDEs.

Before editing the Linux platform code in an IDE,
first make sure that the code has been built at least once
(in other words, run the example app from your Flutter
IDE/editor, or in a terminal execute
cd hello/example; flutter build linux).

Then use the following steps:

Launch Visual Studio Code.

Open the hello/example/linux/ directory.

Choose Yes in the prompt asking:
Would you like to configure project "linux"?.
This will allow C++ autocomplete to work.