8 uses of CONFIG_STAGING_DIRECTORY

ConfigImportForm::submitForm in drupal/core/modules/config/lib/Drupal/config/Form/ConfigImportForm.php
Form submission handler.
drupal_install_config_directories in drupal/core/includes/install.inc
Creates the config directory and ensures it is operational.
FileStorageFactory::getStaging in drupal/core/lib/Drupal/Core/Config/FileStorageFactory.php
Returns a FileStorage object working with the staging config directory.
file_ensure_htaccess in drupal/core/includes/file.inc
Creates a .htaccess file in each Drupal files directory if it is missing.
install_begin_request in drupal/core/includes/install.core.inc
Begins an installation request, modifying the installation state as needed.
system_requirements in drupal/core/modules/system/system.install
Test and report Drupal installation requirements.
TestBase::prepareConfigDirectories in drupal/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php
Create and set new configuration directories.
_drupal_load_test_overrides in drupal/core/includes/bootstrap.inc
Overrides low-level and environment-specific configuration.