Elementor adding new control

functions.php

<?php 

add_action('elementor/element/before_section_end', function( $section, $section_id, $args ) {
    if( $section->get_name() == 'section' && $section_id == 'section_layout' ){

        $section->add_control(
            'wpb_section_padding',
            [
                'label'         => _x( 'Section Padding (top & bottom)', 'Section Control', 'wpb-plugins' ),
                'type'          => Elementor\Controls_Manager::SELECT,
                'options'       => [
                    'default'   => _x( 'Default', 'Section Control', 'wpb-plugins' ),
                    'no'        => _x( 'No', 'Section Control', 'wpb-plugins' ),
                    'medium'    => _x( 'Medium', 'Section Control', 'wpb-plugins' ),
                    'large'     => _x( 'Large', 'Section Control', 'wpb-plugins' ),
                ],
                'default'       => 'large',
                'render_type'   => 'ui',
                'prefix_class'  => 'wpb-section-padding-',
                'label_block'   => true,
                'hide_in_inner' => true,
            ]
        );
    }
}, 10, 3 );