Some corrections to latest changes

Author: LTRData

Library/DiscUtils.Core/VirtualDisk.cs

@@ -245,7 +245,7 @@ public static VirtualDiskTypeInfo GetDiskType(string type, string variant)
     /// <param name="geometry">The geometry of the new disk (or null).</param>
     /// <param name="parameters">Untyped parameters controlling the creation process (TBD).</param>
     /// <returns>The newly created disk.</returns>
-    public static VirtualDisk CreateDisk(DiscFileSystem fileSystem, string type, string variant, string path, long capacity, Geometry? geometry, Dictionary<string, string> parameters)
+    public static VirtualDisk CreateDisk(DiscFileSystem fileSystem, string type, string variant, string path, long capacity, Geometry? geometry, Dictionary<string, string>? parameters)
     {
         var factory = VirtualDiskManager.TypeMap[type];
 
@@ -277,7 +277,7 @@ public static VirtualDisk CreateDisk(DiscFileSystem fileSystem, string type, str
     /// <param name="geometry">The geometry of the new disk (or null).</param>
     /// <param name="parameters">Untyped parameters controlling the creation process (TBD).</param>
     /// <returns>The newly created disk.</returns>
-    public static VirtualDisk? CreateDisk(string type, string variant, string path, long capacity, Geometry? geometry, Dictionary<string, string> parameters)
+    public static VirtualDisk? CreateDisk(string type, string variant, string path, long capacity, Geometry? geometry, Dictionary<string, string>? parameters)
     {
         return CreateDisk(type, variant, path, capacity, geometry, user: null, password: null, parameters);
     }
@@ -293,7 +293,7 @@ public static VirtualDisk CreateDisk(DiscFileSystem fileSystem, string type, str
     /// <param name="parameters">Untyped parameters controlling the creation process (TBD).</param>
     /// <param name="useAsync">Underlying files will be opened optimized for async use.</param>
     /// <returns>The newly created disk.</returns>
-    public static VirtualDisk? CreateDisk(string type, string variant, string path, long capacity, Geometry? geometry, Dictionary<string, string> parameters, bool useAsync)
+    public static VirtualDisk? CreateDisk(string type, string variant, string path, long capacity, Geometry? geometry, Dictionary<string, string>? parameters, bool useAsync)
     {
         return CreateDisk(type, variant, path, capacity, geometry, user: null, password: null, parameters, useAsync);
     }
@@ -310,7 +310,7 @@ public static VirtualDisk CreateDisk(DiscFileSystem fileSystem, string type, str
     /// <param name="password">The password to use when accessing the <c>path</c> (or null).</param>
     /// <param name="parameters">Untyped parameters controlling the creation process (TBD).</param>
     /// <returns>The newly created disk.</returns>
-    public static VirtualDisk? CreateDisk(string type, string variant, string path, long capacity, Geometry? geometry, string? user, string? password, Dictionary<string, string> parameters)
+    public static VirtualDisk? CreateDisk(string type, string variant, string path, long capacity, Geometry? geometry, string? user, string? password, Dictionary<string, string>? parameters)
         => CreateDisk(type, variant, path, capacity, geometry, user, password, parameters, useAsync: false);
 
     /// <summary>
@@ -326,7 +326,7 @@ public static VirtualDisk CreateDisk(DiscFileSystem fileSystem, string type, str
     /// <param name="parameters">Untyped parameters controlling the creation process (TBD).</param>
     /// <param name="useAsync">Underlying files will be opened optimized for async use.</param>
     /// <returns>The newly created disk.</returns>
-    public static VirtualDisk? CreateDisk(string type, string variant, string path, long capacity, Geometry? geometry, string? user, string? password, Dictionary<string, string> parameters, bool useAsync)
+    public static VirtualDisk? CreateDisk(string type, string variant, string path, long capacity, Geometry? geometry, string? user, string? password, Dictionary<string, string>? parameters, bool useAsync)
     {
         var diskParams = new VirtualDiskParameters
         {
@@ -356,7 +356,7 @@ public static VirtualDisk CreateDisk(DiscFileSystem fileSystem, string type, str
     /// <param name="user">The user identity to use when accessing the <c>path</c> (or null).</param>
     /// <param name="password">The password to use when accessing the <c>path</c> (or null).</param>
     /// <returns>The newly created disk.</returns>
-    public static VirtualDisk? CreateDisk(string type, string variant, string path, VirtualDiskParameters diskParameters, string user, string password)
+    public static VirtualDisk? CreateDisk(string type, string variant, string path, VirtualDiskParameters diskParameters, string? user, string? password)
         => CreateDisk(type, variant, path, diskParameters, user, password, useAsync: false);
 
     /// <summary>