Custom Post Type with GraphQL support

<?php
if (!defined('ABSPATH')) exit;

// =========================================================================
// CUSTOM POST TYPE: Property
// =========================================================================

function custom_post_type_property() {

    $labels = array(
        'name'                  => _x('Properties', 'Post Type General Name', 'wpflames'),
        'singular_name'         => _x('Property', 'Post Type Singular Name', 'wpflames'),
        'menu_name'             => __('Properties', 'wpflames'),
        'all_items'             => __('All Properties', 'wpflames'),
        'view_item'             => __('View Property', 'wpflames'),
        'add_new_item'          => __('Add New Property', 'wpflames'),
        'add_new'               => __('Add New', 'wpflames'),
        'edit_item'             => __('Edit Property', 'wpflames'),
        'update_item'           => __('Update Property', 'wpflames'),
        'search_items'          => __('Search Properties', 'wpflames'),
        'not_found'             => __('No Properties found', 'wpflames'),
        'not_found_in_trash'    => __('No Properties found in Trash', 'wpflames'),
        'parent_item_colon'     => __('Parent Property:', 'wpflames'),
    );

    $args = array(
        'label'                 => __('property', 'wpflames'),
        'description'           => __('Properties', 'wpflames'),
        'labels'                => $labels,
        'supports'              => array(
            'title',
        ),
        'hierarchical'          => true,
        'public'                => true,
        'show_ui'               => true,
        'show_in_menu'          => true,
        'show_in_nav_menus'     => true,
        'show_in_admin_bar'     => true,
        'menu_position'         => 5,
        'menu_icon'             => 'dashicons-admin-multisite',
        'can_export'            => true,
        'has_archive'           => false,
        'exclude_from_search'   => false,
        'publicly_queryable'    => true,
        'show_in_rest'          => true,
        'show_in_graphql'       => true,
        'graphql_single_name'   => 'Property',
        'graphql_plural_name'   => 'Properties',
        'capability_type'       => 'page',
        'rewrite'               => array(
            'slug' => 'property',
            'hierarchical' => true,
            'with_front' => false,
        ),
    );

    register_post_type('property', $args);
}
add_action('init', 'custom_post_type_property', 0);