wp-includes/rest-api.php:1804Finds the schema for a property using the patternProperties keyword.
$propertystring$argsarrayarray|nullfunction rest_find_matching_pattern_property_schema( $property, $args ) { if ( isset( $args['patternProperties'] ) ) { foreach ( $args['patternProperties'] as $pattern => $child_schema ) { if ( rest_validate_json_schema_pattern( $pattern, $property ) ) { return $child_schema; } } } return null;}Introduced in 5.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.