feat: Allows for the ItemKey to be left undefined or empty and the ParentDeviceKey to be used on it's own instead.

src/PepperDash.Essentials.Core/Devices/AudioControlListItemBase.cs

@@ -9,9 +9,15 @@ namespace PepperDash.Essentials.Core
 {
     public abstract class AudioControlListItemBase
     {
+        /// <summary>
+        /// Key of the parent device in the DeviceManager
+        /// </summary>
         [JsonProperty("parentDeviceKey")]
         public string ParentDeviceKey { get; set; }
 
+        /// <summary>
+        /// Optional key of the item in the parent device
+        /// </summary>
         [JsonProperty("itemKey")]
         public string ItemKey { get; set; }
 

src/PepperDash.Essentials.Core/Devices/LevelControlListItem.cs

@@ -51,8 +51,18 @@ namespace PepperDash.Essentials.Core
         /// The key of the device in the DeviceManager for control
         /// </summary>
         [JsonProperty("deviceKey")]
-        public string DeviceKey => DeviceManager.AllDevices.
+        public string DeviceKey
-            Where(d => d.Key.Contains(ParentDeviceKey) && d.Key.Contains(ItemKey)).FirstOrDefault()?.Key ?? $"{ParentDeviceKey}--{ItemKey}";
+        {
+            get
+            {
+                if(string.IsNullOrEmpty(ItemKey)) return ParentDeviceKey;
+                else
+                {
+                    return DeviceManager.AllDevices.
+                    Where(d => d.Key.Contains(ParentDeviceKey) && d.Key.Contains(ItemKey)).FirstOrDefault()?.Key ?? $"{ParentDeviceKey}--{ItemKey}";
+                }
+            }
+        }
 
         /// <summary>
         /// Indicates if the item is a level, mute , or both