All classes should be declared using either the "abstract" or "final" keyword.

All classes should be declared using either the "abstract" or "final" keyword.

All classes should be declared using either the "abstract" or "final" keyword.

All classes should be declared using either the "abstract" or "final" keyword.

All classes should be declared using either the "abstract" or "final" keyword.

All classes should be declared using either the "abstract" or "final" keyword.

All classes should be declared using either the "abstract" or "final" keyword.

All classes should be declared using either the "abstract" or "final" keyword.

All classes should be declared using either the "abstract" or "final" keyword.

Trailing comma after the last parameter in function call is disallowed.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/cache@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/