Core - Fix node related warnings

src/Artemis.Core/Plugins/Nodes/NodeProvider.cs

@@ -63,6 +63,11 @@ public abstract class NodeProvider : PluginFeature
         NodeTypeStore.Add(nodeData);
     }
     
+    /// <summary>
+    /// Adds a color for lines of the provided type.
+    /// </summary>
+    /// <param name="color">The color to add.</param>
+    /// <typeparam name="T">The type to use the color for.</typeparam>
     protected TypeColorRegistration RegisterTypeColor<T>(SKColor color)
     {
         return NodeTypeStore.AddColor(typeof(T), color, this);

src/Artemis.Core/VisualScripting/Interfaces/INode.cs

@@ -18,7 +18,7 @@ public interface INode : INotifyPropertyChanged, IBreakableModel
     /// <summary>
     /// Gets
     /// </summary>
-    NodeData? NodeData { get; set; }
+    NodeData NodeData { get; set; }
 
     /// <summary>
     ///     Gets the name of the node

src/Artemis.Core/VisualScripting/NodeData.cs

@@ -149,7 +149,5 @@ public class NodeData
     /// </summary>
     public Type? OutputType { get; }
 
-    private readonly Func<INodeScript, NodeEntity?, INode> _create;
-
     #endregion
 }

src/Artemis.Storage/Entities/Profile/Nodes/NodeEntity.cs

@@ -28,8 +28,8 @@ public class NodeEntity
     }
 
     public Guid Id { get; set; }
-    public string Type { get; set; }
+    public string Type { get; set; } = string.Empty;
-    public string ProviderId { get; set; }
+    public string ProviderId { get; set; } = string.Empty;
 
     public string Name { get; set; } = string.Empty;
     public string Description { get; set; } = string.Empty;