How do I create a role user drupal programmatically

How do I create a role programmatically in Drupal 8+

//your data array
$data = array('id' => 'client', 'label' => 'Client');
//creating your role
$role = \Drupal\user\Entity\Role::create($data);
//saving your role
$role->save();

In my case, I wanted to be able to auto-create multiple roles ("clients","managers","salesrep") to work with my custom module.

This is how I auto-create roles programmatically in Drupal.

use Drupal\user\Entity\Role;

function mycustommodule_install() {
//Get all available roles
$get_all_roles=Role::loadMultiple(); 
//these are the required roles  
$required_roles=array("clients","managers","salesrep");
//check if is not already created , create each role
foreach($required_roles as $the_role){
    if(!isset($get_all_roles[$the_role])){
       $role = Role::create(array('id' => $the_role, 'label' => ucwords($the_role)));
       $role->save();  
    }
}
// 
}