salesforce-8.x-4.x-dev/modules/salesforce_example/salesforce_example.services.yml

services:
  salesforce_example.push_params:
    class: Drupal\salesforce_example\EventSubscriber\SalesforceExampleSubscriber
    arguments: ['@salesforce.client', '@logger.factory','@messenger']
    tags:
      - { name: event_subscriber }