9 calls to system_region_list()
- Block::preSave in core/
modules/ block/ src/ Entity/ Block.php  - Acts on an entity before the presave hook is invoked.
 - BlockController::getVisibleRegionNames in core/
modules/ block/ src/ Controller/ BlockController.php  - Returns the human-readable list of regions keyed by machine name.
 - BlockDeleteForm::systemRegionList in core/
modules/ block/ src/ Form/ BlockDeleteForm.php  - Wraps system_region_list().
 - BlockForm::form in core/
modules/ block/ src/ BlockForm.php  - Gets the actual form array to be built.
 - BlockListBuilder::systemRegionList in core/
modules/ block/ src/ BlockListBuilder.php  - Wraps system_region_list().
 - block_rebuild in core/
modules/ block/ block.module  - Implements hook_rebuild().
 - block_theme_initialize in core/
modules/ block/ block.module  - Assigns an initial, default set of blocks for a theme.
 - system_default_region in core/
modules/ system/ system.module  - Gets the name of the default region for a given theme.
 - ThemeInstallerTest::testThemeInfoAlter in core/
tests/ Drupal/ KernelTests/ Core/ Theme/ ThemeInstallerTest.php  - Tests that theme info can be altered by a module.
 
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