* Update WillPopScope API Docs

* Update WillPopScope API Docs

* Update WillPopScope API Docs template fix

* Refactoring dartpad sample

* Refactoring dartpad sample

* Remove trailing spaces

* Minor build fix

* Remove space

* Change the dartpad sample and other minor changes

* Change the dartpad example

* Remove trailing character

* refactor code to dart preamble

* adding uncleared variable

* adding uncleared variable

* Implemented requested changes

* Implemented requested changes

* empty commit

* minor changes
Co-authored-by: Chinmay Kabi <chinmaykabi@gmail.com>