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1. PHP, and in particular newer PHP features such as
   1. Traits
   2. Named Arguments
2. CakePHP v4 and the MVC design pattern
3. The Registry Data Model (and the Technical Manual in general)

PHP 8

Registry PE is targeting PHP 8+. In particular:

1. Function calls should be typed, including the return type.

Adding New Models

Data Model and Functional Design

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