wp-includes/customize/class-wp-customize-partial.php:202Retrieves parsed ID data for multidimensional setting.
array$basestring
$keysarray
final public function id_data() { return $this->id_data; }Introduced in 4.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/customize/class-wp-customize-partial.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.