---
title: Class
description: Deep learning on using the API.
...

### Pattern

#### Class

~~~ .txt
^[A-Z][a-zA-Z0-9]*(?:[\\_][A-Z0-9][a-zA-Z0-9]*)*$
~~~

#### Property

~~~ .txt
^[a-z][a-zA-Z0-9]*(?:_[a-zA-Z0-9]+)*$
~~~