WP_Sidebar_Block_Editor_Control example

                    $section_args = apply_filters( 'customizer_widgets_section_args', $section_args, $section_id, $sidebar_id );

                    $section = new WP_Customize_Sidebar_Section( $this->manager, $section_id, $section_args );
                    $this->manager->add_section( $section );

                    if ( $use_widgets_block_editor ) {
                        $control = new WP_Sidebar_Block_Editor_Control(
                            $this->manager,
                            $setting_id,
                            array(
                                'section'     => $section_id,
                                'sidebar_id'  => $sidebar_id,
                                'label'       => $section_args['title'],
                                'description' => $section_args['description'],
                            )
                        );
                    } else {
                        $control = new WP_Widget_Area_Customize_Control(