media_entity_document.install

<?php

/**
 * @file
 * Install, uninstall and update hooks for Media entity document module.
 */

/**
 * Implements hook_install().
 */
function media_entity_document_install() {
  $source = drupal_get_path('module', 'media_entity_document') . '/images/icons';
  $destination = \Drupal::config('media_entity.settings')->get('icon_base');
  media_entity_copy_icons($source, $destination);
}

/**
 * Implements hook_requirements().
 */
function media_entity_document_requirements() {
  $requirements = [];

  if (version_compare(\Drupal::VERSION, '8.4.0', '>=') && \Drupal::moduleHandler()->moduleExists('media')) {
    $requirements['media_entity_document: Not compatible with core Media'] = [
      'title' => t('Core Media'),
      'description' => t("Media Entity Document's functionality has been merged into the core Media module, so it cannot be installed alongside core Media."),
      'severity' => REQUIREMENT_ERROR,
    ];
  }

  return $requirements;
}