api appointment store and show

app/Models/PractitionerRole.php

@@ -89,4 +89,9 @@ class PractitionerRole extends Model
     {
         return $this->hasOneThrough(Person::class, Practitioner::class, 'person_id', 'id');
     }
+
+    public function appointmentParticipantables()
+    {
+        return $this->morphMany(AppointmentParticipant::class, 'participantable');
+    }
 }