only in patch2:
unchanged:
--- a/composer.json
+++ b/composer.json
@@ -6,5 +6,12 @@
   "minimum-stability": "dev",
   "require": {
     "drupal/core": "~8.3"
+  },
+  "extra": {
+    "drush": {
+      "services": {
+        "drush.services.yml": "^9"
+      }
+    }
   }
 }
only in patch2:
unchanged:
--- a/drush.services.yml
+++ b/drush.services.yml
@@ -1,6 +1,6 @@
 services:
   default_content.commands:
     class: \Drupal\default_content\Commands\DefaultContentCommands
-    arguments: ['@default_content.exporter']
+    arguments: ['@default_content.exporter', '@default_content.importer', '@module_handler']
     tags:
       - { name: drush.command }
only in patch2:
unchanged:
--- a/src/Commands/DefaultContentCommands.php
+++ b/src/Commands/DefaultContentCommands.php
@@ -3,7 +3,11 @@
 namespace Drupal\default_content\Commands;
 
 use Drupal\default_content\ExporterInterface;
+use Drupal\default_content\ImporterInterface;
 use Drush\Commands\DrushCommands;
+use Drush\Log\LogLevel;
+use Drupal\Core\StringTranslation\PluralTranslatableMarkup;
+use Drupal\Core\Extension\ModuleHandlerInterface;
 
 /**
  * Class DefaultContentCommands.
@@ -20,13 +24,32 @@ class DefaultContentCommands extends DrushCommands {
   protected $defaultContentExporter;
 
   /**
+   * The default content importer.
+   *
+   * @var \Drupal\default_content\ImporterInterface
+   */
+  protected $defaultContentImporter;
+
+  /**
+   * Module handler service.
+   *
+   * @var \Drupal\Core\Extension\ModuleHandlerInterface
+   */
+  protected $moduleHandler;
+
+  /**
    * SimplesitemapController constructor.
    *
    * @param \Drupal\default_content\ExporterInterface $default_content_exporter
    *   The default content exporter.
+   *
+   * @param \Drupal\default_content\ImporterInterface $default_content_importer
+   *   The default content importer.
    */
-  public function __construct(ExporterInterface $default_content_exporter) {
+  public function __construct(ExporterInterface $default_content_exporter, ImporterInterface $default_content_importer, ModuleHandlerInterface $module_handler) {
     $this->defaultContentExporter = $default_content_exporter;
+    $this->defaultContentImporter = $default_content_importer;
+    $this->moduleHandler = $module_handler;
   }
 
   /**
@@ -89,11 +112,71 @@ class DefaultContentCommands extends DrushCommands {
    * @aliases dcem
    */
   public function contentExportModule($module) {
+    if (!$this->isValidModule($module)) {
+      return;
+    }
+
     $serialized_by_type = $this->defaultContentExporter->exportModuleContent($module);
     $module_folder = \Drupal::moduleHandler()
-      ->getModule($module)
-      ->getPath() . '/content';
+        ->getModule($module)
+        ->getPath() . '/content';
     $this->defaultContentExporter->writeDefaultContent($serialized_by_type, $module_folder);
   }
 
+  /**
+   * Imports all the content defined in a module info file.
+   *
+   * @param string $module
+   *   The name of the module.
+   *
+   * @command default-content:import-module
+   * @aliases dcim
+   */
+  public function contentImportModule($module) {
+    if (!$this->isValidModule($module)) {
+      return;
+    }
+
+    if ($count = count($this->defaultContentImporter->importContent($module))) {
+      $message = new PluralTranslatableMarkup($count, 'Total: 1 entity imported.', '@module: @count entries imported.');
+      $this->logger()->log(LogLevel::OK, $message);
+    }
+    else {
+      $this->logger()->log(LogLevel::WARNING, dt('No content has been imported.'));
+    }
+  }
+
+  /**
+   * Imports the content provided by installed modules and default profile.
+   *
+   * @command default-content:import-all
+   * @aliases dcia
+   */
+  public function contentImportAll() {
+    $count = count($this->defaultContentImporter->importAllContent());
+    if ($count) {
+      $message = new PluralTranslatableMarkup($count, 'Total: 1 entry imported.', 'Total: @count entries imported.');
+      $this->logger()->log(LogLevel::OK, $message);
+    }
+    else {
+      $this->logger()->log(LogLevel::WARNING, dt('No content has been imported.'));
+    }
+  }
+
+  /**
+   * Validates that a module or a profile exists and is installed.
+   *
+   * @param string|null $module
+   *   An installed module or the default profile. If not passed, the validation
+   *   passes.
+   *
+   * @return bool
+   *   TRUE if the passed module or profile name validates.
+   */
+   protected function isValidModule($module) {
+    return $this->moduleHandler->moduleExists($module) || $module === \Drupal::installProfile() ?
+      TRUE :
+      drush_set_error('INVALID_MODULE', dt("Module or profile '@module' doesn't exist or is uninstalled.", ['@module' => $module]));
+  }
+
 }