Astra_LifterLMS::register_builder_fields( string $default_fields )

		public function register_builder_fields( $default_fields ) {
			$disable_fields  = array();
			$show_meta_field = ! Astra_Meta_Boxes::is_bb_themer_layout();
			/**
			 * Main Header.
			 */
			$disable_fields[] = array(
				'attribute' => 'ast-main-header-display',
				'id'        => 'ast-main-header-display',
				'label'     => esc_html__( 'Disable Primary Header', 'astra' ),
				'switch_on' => 'disabled',
				'type'      => 'switch',
			);
			/**
			 * Above Header
			 */
			$disable_fields[] = array(
				'attribute' => 'ast-hfb-above-header-display',
				'id'        => 'ast-hfb-above-header-display',
				'label'     => esc_html__( 'Disable Above Header', 'astra' ),
				'switch_on' => 'disabled',
				'type'      => 'switch',
			);
			/**
			 * Below Header
			 */
			$disable_fields[] = array(
				'attribute' => 'ast-hfb-below-header-display',
				'id'        => 'ast-hfb-below-header-display',
				'label'     => esc_html__( 'Disable Below Header', 'astra' ),
				'switch_on' => 'disabled',
				'type'      => 'switch',
			);
			/**
			 * Mobile Header
			 */
			$disable_fields[] = array(
				'attribute' => 'ast-hfb-mobile-header-display',
				'id'        => 'ast-hfb-mobile-header-display',
				'label'     => esc_html__( 'Disable Mobile Header', 'astra' ),
				'switch_on' => 'disabled',
				'type'      => 'switch',
			);
			if ( $show_meta_field ) {
				$disable_fields[] = array(
					'attribute' => 'site-post-title',
					'id'        => 'site-post-title',
					'label'     => esc_html__( 'Disable Title', 'astra' ),
					'switch_on' => 'disabled',
					'type'      => 'switch',
				);
			}
			if ( $show_meta_field && 'disabled' != astra_get_option( 'footer-adv' ) ) {
				$disable_fields[] = array(
					'attribute' => 'footer-adv-display',
					'id'        => 'footer-adv-display',
					'label'     => esc_html__( 'Disable Footer Widgets', 'astra' ),
					'switch_on' => 'disabled',
					'type'      => 'switch',
				);
			}
			if ( 'disabled' != astra_get_option( 'footer-sml-layout' ) ) {
				$disable_fields[] = array(
					'attribute' => 'footer-sml-layout',
					'id'        => 'footer-sml-layout',
					'label'     => esc_html__( 'Disable Footer', 'astra' ),
					'switch_on' => 'disabled',
					'type'      => 'switch',
				);
			}
			$fields['astra_theme_settings'] = array(
				'title'      => __( 'Astra Settings', 'astra' ),
				'toggleable' => true,
				'fields'     => apply_filters(
					'astra_theme_lifterlms_settings',
					array(
						array(
							array(
								'attribute' => 'site-sidebar-layout',
								'id'        => 'site-sidebar-layout',
								'label'     => esc_html__( 'Sidebar', 'astra' ),
								'type'      => 'ast-select',
								'options'   => array(
									'default'       => esc_html__( 'Customizer Setting', 'astra' ),
									'left-sidebar'  => esc_html__( 'Left Sidebar', 'astra' ),
									'right-sidebar' => esc_html__( 'Right Sidebar', 'astra' ),
									'no-sidebar'    => esc_html__( 'No Sidebar', 'astra' ),
								),
							),
							array(
								'attribute' => 'site-content-layout',
								'id'        => 'site-content-layout',
								'label'     => esc_html__( 'Content Layout', 'astra' ),
								'type'      => 'ast-select',
								'options'   => array(
									'default'         => esc_html__( 'Customizer Setting', 'astra' ),
									'boxed-container' => esc_html__( 'Boxed', 'astra' ),
									'content-boxed-container' => esc_html__( 'Content Boxed', 'astra' ),
									'plain-container' => esc_html__( 'Full Width / Contained', 'astra' ),
									'page-builder'    => esc_html__( 'Full Width / Stretched', 'astra' ),
								),
							),
						),
						$disable_fields,
					)
				),
			);
			$default_fields['assignment']   = $fields;
			$default_fields['lesson']       = $fields;
			$default_fields['quiz']         = $fields;
			return $default_fields;
		}