Add custom naming convention for JsonNamingPolicy for snake_case

provider_azure_function/Program.cs

@@ -20,7 +20,7 @@
         var jsonSerializerOptions = new JsonSerializerOptions
         {
             DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
-            PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+            PropertyNamingPolicy = SnakeCaseNamingPolicy.Instance,
         };
         jsonSerializerOptions.Converters.Add(new JsonStringEnumConverter(JsonNamingPolicy.CamelCase));
 

provider_azure_function/Utilities/SnakeCaseNamingPolicy.cs

@@ -0,0 +1,12 @@
+using System.Text.Json;
+
+public class SnakeCaseNamingPolicy : JsonNamingPolicy
+{
+    public static SnakeCaseNamingPolicy Instance { get; } = new SnakeCaseNamingPolicy();
+
+    public override string ConvertName(string name)
+    {
+        // Conversion to other naming convention goes here. Like SnakeCase, KebabCase etc.
+        return name.ToSnakeCase();
+    }
+}

provider_azure_function/Utilities/StringUtils.cs

@@ -0,0 +1,7 @@
+public static class StringUtils
+{
+    public static string ToSnakeCase(this string str)
+    {
+        return string.Concat(str.Select((x, i) => i > 0 && char.IsUpper(x) ? "_" + x.ToString() : x.ToString())).ToLower();
+    }
+}