Retrieve usual categories

Retrieve popular categories used throughout the system.

URL: /usual-categories

Method: GET

Success Responses

Code : 200 OK

Content: [string]

Example:: GET /usual-categories.

[
    "accessing",
    "actions",
    "construction",
    "event handlers",
    "initialization",
    "inquiries",
    "printing",
    "private",
    "services",
    "testing",
    "updating",
    "validation"
]