First, we need to create a separate class for handing property-related features as we are using an object oriented plugin. So, create a new directory called classes inside the main plugin directory, and add a new file called class-wqcpt-property.php. Then, we need to include this file in our plugin and create an object to initialize the features. We need to add the following line inside the includes function of the WPQuick_CPT class to include the file:
require_once WQCPT_PLUGIN_DIR . 'classes/class-wqcpt-model-property.php';
Next, we need to create an object of this class by using the following line of code inside the instance function:
self::$instance->model_property = new WQCPT_Model_Property();
Now, ...