wp-includes/class-wp-block-type.php:400Proxies checking for deprecated properties for script and style handles for backward compatibility.
$namestringbool public function __isset( $name ) { if ( in_array( $name, array( 'variations', 'uses_context' ), true ) ) { return true; } if ( ! in_array( $name, $this->deprecated_properties, true ) ) { return false; } $new_name = $name . '_handles'; return isset( $this->{$new_name}[0] ); }Introduced in 6.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-block-type.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.