Add ConverterContextExtensions

src/DotNetWorker.Core/Converters/Converter/ConverterContextExtensions.cs

@@ -0,0 +1,29 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+namespace Microsoft.Azure.Functions.Worker.Converters
+{
+    /// <summary>
+    /// Provides extension methods to work with an <see cref="ConverterContext"/> instance.
+    /// </summary>
+    public static class ConverterContextExtensions
+    {
+        /// <summary>
+        /// Tries to retrieve the binding attribute from the <see cref="ConverterContext"/>.
+        /// </summary>
+        /// <param name="context">The converter context.</param>
+        /// <param name="bindingAttribute">When this method returns, contains the binding attribute if found; otherwise, <c>null</c>.</param>
+        /// <returns><c>true</c> if the binding attribute is found in the converter context; otherwise, <c>false</c>.</returns>
+        public static bool TryGetBindingAttribute(this ConverterContext context, out object? bindingAttribute)
+        {
+            if (context.Properties.TryGetValue(PropertyBagKeys.BindingAttribute, out object? value))
+            {
+                bindingAttribute = value;
+                return true;
+            }
+
+            bindingAttribute = null;
+            return false;
+        }
+    }
+}