Managed image allow to select image file, preview and remove.

Step 1. Create acustom module and a @FormElement usin the ManagedImage.php file

Step 2. Example of managed image

Import configuration file programmatically on Drupal 9 using config_update contrib module and service

//Update Module settings
\Drupal::service('config_update.config_update')->revert('system.simple', 'mymodule.settings');

State servic eallow to store variables such as state of the server temporarily or permanently

Examples:

Drupal settings file can contains variable which can use to use for different configuration in different environments.

Example:
env_name
default_info_nid

$settings['env_name'] = 'Local';
$settings['default_info_nid'] = 1';

Steps:

1. Update branche
git reset --hard origin/features/BRANCHNAME
OR
git pull origin features/BRANCHNAME