How do I load a package on DART?

For the full process:

Packages, according to Flutterdocs, can be explained as “shared packages contributed by other developers to the Flutter and Dart ecosystems . This allows developers to quickly build an app without having to develop everything from scratch.”

How to Fix “Failed to install the following Android SDK packages as some licenses have not been accepted” Error in Android Studio?

To use a package, do the following: