What's an attribute?
/** * @param string $name * @return array */ public function getAttribute( $name ) { if ( isset( $this->testAttributes[$name] ) ) { return $this->testAttributes[$name]; } if ( in_array( $name, self::LAZY_LOADED_ATTRIBUTES, true ) ) { return $this->getLazyLoadedAttribute( $name ); } return $this->attributes[$name] ?? []; }