vlsuite-1.0.x-dev/modules/vlsuite_block/vlsuite_block.install

<?php

/**
 * @file
 * VLSuite - Block install module file.
 */

/**
 * Enable vlsuite slider to fit new dependency if not already enabled.
 */
function vlsuite_block_update_10001() {
  if (!\Drupal::service('module_handler')->moduleExists('vlsuite_slider')) {
    \Drupal::service('module_installer')->install(['vlsuite_slider']);
  }
}