Card.php

<?php
namespace oddEvan\TrainerDB\Content\PostType;

use WebDevStudios\OopsWP\Structure\Content\PostType;

class Card extends PostType {
	protected $slug = 'card';

	protected function get_labels() : array {
		return [
			'name'                  => _x( 'Cards', 'Post Type General Name', 'trainerdb' ),
			'singular_name'         => _x( 'Card', 'Post Type Singular Name', 'trainerdb' ),
			//other labels go here
		];
	}
	
	protected function get_args() : array {
		return [
			'label'           => __( 'Card', 'trainerdb' ),
			'description'     => __( 'A particular card', 'trainerdb' ),
			'supports'        => [ 'title', 'thumbnail', 'custom-fields' ],
			'hierarchical'    => false,
			'public'          => true,
			'menu_position'   => 5,
			'menu_icon'       => 'dashicons-share-alt',
			'capability_type' => 'post',
			'show_in_rest'    => true,
			'taxonomies'      => [ 'set', 'card_hash' ],
		];
	}
}