13 files declare their use of RestClientInterface in Salesforce Suite 5.0.x

DeleteHandler.php in modules/salesforce_pull/src/DeleteHandler.php

DeleteHandlerTest.php in modules/salesforce_pull/tests/src/Unit/DeleteHandlerTest.php

MappedObjectTest.php in modules/salesforce_mapping/tests/src/Unit/MappedObjectTest.php

PullBase.php in modules/salesforce_pull/src/Plugin/QueueWorker/PullBase.php

PullBaseTest.php in modules/salesforce_pull/tests/src/Unit/PullBaseTest.php

QueueHandler.php in modules/salesforce_pull/src/QueueHandler.php

QueueHandlerTest.php in modules/salesforce_pull/tests/src/Unit/QueueHandlerTest.php

SalesforceMappingFieldPluginBase.php in modules/salesforce_mapping/src/SalesforceMappingFieldPluginBase.php

SalesforceMappingFormBase.php in modules/salesforce_mapping_ui/src/Form/SalesforceMappingFormBase.php

SalesforcePushQueueProcessorRestTest.php in modules/salesforce_push/tests/src/Unit/SalesforcePushQueueProcessorRestTest.php

salesforce_mapping.drush.inc in modules/salesforce_mapping/salesforce_mapping.drush.inc

Drush integration for Salesforce.

SettingsForm.php in src/Form/SettingsForm.php

Token.php in modules/salesforce_mapping/src/Plugin/SalesforceMappingField/Token.php