Open generator
What is?
https://www.drupal.org/docs/core-modules-and-themes/core-modules/block-…
You can build your own block using this generator.
How to use?
Block is plugin. It helps us with some cool stuff. You may find your blocks using block ui at /admin/structure/block
Add it to your module.
Used template: https://github.com/Chi-teck/drupal-code-generator/blob/master/templates…
Technology