interface LayoutInterface

interface LayoutInterface extends PluginInspectionInterface, DerivativeInspectionInterface, ConfigurableInterface, DependentPluginInterface, ContextAwarePluginInterface {
    
    /**
     * Build a render array for layout with regions.
     *
     * @param array $regions
     *   An associative array keyed by region name, containing render arrays
     *   representing the content that should be placed in each region.
     *
     * @return array
     *   Render array for the layout with regions.
     */
    public function build(array $regions);
    
    /**
     * {@inheritdoc}
     *
     * @return \Drupal\Core\Layout\LayoutDefinition
     */
    public function getPluginDefinition();

}