t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead

Problem/Motivation

t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes