wp-includes/class-wp-block.php:223Returns a value from an inaccessible property.
$namestringarray|null public function __get( $name ) { if ( 'attributes' === $name ) { $this->attributes = isset( $this->parsed_block['attrs'] ) ? $this->parsed_block['attrs'] : array(); if ( ! is_null( $this->block_type ) ) { $this->attributes = $this->block_type->prepare_attributes_for_render( $this->attributes ); } return $this->attributes; } return null; }Introduced in 5.5.0. 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.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.