11 files declare their use of ProfileInterface in Linkit 8.4

AddForm.php in src/Form/Attribute/AddForm.php

Contains \Drupal\linkit\Form\Attribute\AddForm.

AddForm.php in src/Form/Matcher/AddForm.php

Contains \Drupal\linkit\Form\Matcher\AddForm.

DeleteForm.php in src/Form/Attribute/DeleteForm.php

Contains \Drupal\linkit\Form\Attribute\DeleteForm.

DeleteForm.php in src/Form/Matcher/DeleteForm.php

Contains \Drupal\linkit\Form\Matcher\DeleteForm.

EditForm.php in src/Form/Attribute/EditForm.php

Contains \Drupal\linkit\Form\Attribute\EditForm.

EditForm.php in src/Form/Matcher/EditForm.php

Contains \Drupal\linkit\Form\Matcher\EditForm.

linkit.module in ./linkit.module

LinkitController.php in src/Controller/LinkitController.php

Contains \Drupal\linkit\Controller\LinkitController.

OverviewForm.php in src/Form/Attribute/OverviewForm.php

Contains \Drupal\linkit\Form\Attribute\OverviewForm.

OverviewForm.php in src/Form/Matcher/OverviewForm.php

Contains \Drupal\linkit\Form\Matcher\OverviewForm.

Profile.php in src/Entity/Profile.php

Contains \Drupal\linkit\Entity\Profile.