diff --git a/Json2CSharpCodeGenerator.Lib/CodeWriters/CSharpCodeWriter.cs b/Json2CSharpCodeGenerator.Lib/CodeWriters/CSharpCodeWriter.cs
index 55c6f70..ae1d9e9 100644
--- a/Json2CSharpCodeGenerator.Lib/CodeWriters/CSharpCodeWriter.cs
+++ b/Json2CSharpCodeGenerator.Lib/CodeWriters/CSharpCodeWriter.cs
@@ -490,12 +490,11 @@ public class CSharpCodeWriter : ICodeBuilder
             {
                 if (field.Type.Type == JsonTypeEnum.Array)
                 {
-                    // TODO: Respect config.CollectionType
-                    _ = sw.AppendFormat(indentMembers + "public IReadOnlyList<{0}> {1} {{ get; }}{2}", GetTypeName(field.Type.InternalType, config), classPropertyName, Environment.NewLine);
+                    _ = sw.AppendFormat(indentMembers + "public {0} {1} {{ init; get; }}{2}", GetCollectionTypeName(elementTypeName: GetTypeName(field.Type.InternalType, config), config.CollectionType), classPropertyName, Environment.NewLine);
                 }
                 else
                 {
-                    _ = sw.AppendFormat(indentMembers + "public {0} {1} {{ get; }}{2}", field.Type.GetTypeName(), classPropertyName, Environment.NewLine);
+                    _ = sw.AppendFormat(indentMembers + "public {0} {1} {{ init; get; }}{2}", field.Type.GetTypeName(), classPropertyName, Environment.NewLine);
                 }
             }
             else
diff --git a/Json2CSharpCodeGenerator.Tests/Json2CSharpCodeGenerator.Tests.csproj b/Json2CSharpCodeGenerator.Tests/Json2CSharpCodeGenerator.Tests.csproj
index a6e7957..d9b869a 100644
--- a/Json2CSharpCodeGenerator.Tests/Json2CSharpCodeGenerator.Tests.csproj
+++ b/Json2CSharpCodeGenerator.Tests/Json2CSharpCodeGenerator.Tests.csproj
@@ -33,6 +33,12 @@
     <None Include="Test_10_SETTINGS_IMMUTABLE_CLASSES_INPUT.txt">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>
+    <None Include="Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_OUTPUT.txt">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+    <None Include="Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_INPUT.txt">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
     <None Include="Test_11_NoListSetter_INPUT.txt">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>
diff --git a/Json2CSharpCodeGenerator.Tests/Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES.cs b/Json2CSharpCodeGenerator.Tests/Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES.cs
new file mode 100644
index 0000000..1e39cc8
--- /dev/null
+++ b/Json2CSharpCodeGenerator.Tests/Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES.cs
@@ -0,0 +1,38 @@
+using Json2CSharpCodeGenerator.Lib;
+using Json2CSharpCodeGenerator.Lib.CodeWriters;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace Json2CSharpCodeGenerator.Tests;
+
+[TestClass]
+public class Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES
+{
+
+    [TestMethod]
+    public void Run()
+    {
+        string path = Path.Combine(AppContext.BaseDirectory, "Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_INPUT.txt");
+        string resultPath = Path.Combine(AppContext.BaseDirectory, "Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_OUTPUT.txt");
+        string input = File.ReadAllText(path);
+        JsonClassGenerator jsonClassGenerator = new()
+        {
+            AttributeLibrary = JsonLibrary.SystemTextJson,
+            AttributeUsage = JsonPropertyAttributeUsage.OnlyWhenNecessary,
+            CodeWriter = new CSharpCodeWriter(),
+            CollectionType = OutputCollectionType.MutableList,
+            OutputType = OutputTypes.ImmutableClass,
+            UsePascalCase = true,
+            UseThisKeyWord = false,
+        };
+        string returnVal = jsonClassGenerator.GenerateClasses(input, errorMessage: out _).ToString();
+        string resultsCompare = File.ReadAllText(resultPath);
+        string expected = resultsCompare.NormalizeOutput();
+        string actual = returnVal.NormalizeOutput();
+        if (expected != actual)
+        {
+            File.WriteAllText(Path.Combine(AppContext.BaseDirectory, "Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_OUTPUT.actual.txt"), returnVal);
+            File.WriteAllText(Path.Combine(AppContext.BaseDirectory, "Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_OUTPUT.expected.txt"), resultsCompare);
+        }
+        Assert.AreEqual(expected, actual);
+    }
+}
\ No newline at end of file
diff --git a/Json2CSharpCodeGenerator.Tests/Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_INPUT.txt b/Json2CSharpCodeGenerator.Tests/Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_INPUT.txt
new file mode 100644
index 0000000..50cad5b
--- /dev/null
+++ b/Json2CSharpCodeGenerator.Tests/Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_INPUT.txt
@@ -0,0 +1,30 @@
+{						
+   "Class1":{	
+      "id":4,
+      "user_id":"user_id_value",
+	  "awesomeobject": {"SomeProps1" : 1, "SomeProps2" : "test"},
+      "created_at":"2015-06-02 23:33:90",
+      "updated_at":"2015-06-02 23:33:90",
+     "users":[ 
+         { 
+            "id":"6",
+            "name":"Test Child 1",
+            "created_at":"2015-06-02 23:33:90",
+            "updated_at":"2015-06-02 23:33:90",
+            "e mail":"test@gmail.com"
+         }, 
+         {
+            "id":"6",
+            "name":"Test Child 1",
+            "created_at":"2015-06-02 23:33:90",
+            "updated_at":"2015-06-02 23:33:90",
+            "e mail":"test@gmail.com",
+            "testanadditionalfield":"tet"
+         }
+      ],			
+   },
+
+  "Class2" : {
+	"SomePropertyOfClass2" : "SomeValueOfClass2"
+}
+}
\ No newline at end of file
diff --git a/Json2CSharpCodeGenerator.Tests/Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_OUTPUT.txt b/Json2CSharpCodeGenerator.Tests/Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_OUTPUT.txt
new file mode 100644
index 0000000..8dc03e9
--- /dev/null
+++ b/Json2CSharpCodeGenerator.Tests/Test_10_SETTINGS_IMMUTABLE_CLASSES_PHARES_OUTPUT.txt
@@ -0,0 +1,104 @@
+// Root myDeserializedClass = JsonSerializer.Deserialize<Root>(myJsonResponse);
+    public class Awesomeobject
+    {
+        [JsonConstructor]
+        public Awesomeobject(
+            int someProps1,
+            string someProps2
+        )
+        {
+            SomeProps1 = someProps1;
+            SomeProps2 = someProps2;
+        }
+
+        public int SomeProps1 { init; get; }
+        public string SomeProps2 { init; get; }
+    }
+
+    public class Class1
+    {
+        [JsonConstructor]
+        public Class1(
+            int id,
+            string userId,
+            Awesomeobject awesomeobject,
+            string createdAt,
+            string updatedAt,
+            List<User> users
+        )
+        {
+            Id = id;
+            UserId = userId;
+            Awesomeobject = awesomeobject;
+            CreatedAt = createdAt;
+            UpdatedAt = updatedAt;
+            Users = users;
+        }
+
+        public int Id { init; get; }
+        public string UserId { init; get; }
+        public Awesomeobject Awesomeobject { init; get; }
+        public string CreatedAt { init; get; }
+        public string UpdatedAt { init; get; }
+        public List<User> Users { init; get; }
+    }
+
+    public class Class2
+    {
+        [JsonConstructor]
+        public Class2(
+            string somePropertyOfClass2
+        )
+        {
+            SomePropertyOfClass2 = somePropertyOfClass2;
+        }
+
+        public string SomePropertyOfClass2 { init; get; }
+    }
+
+    public class Root
+    {
+        [JsonConstructor]
+        public Root(
+            Class1 class1,
+            Class2 class2
+        )
+        {
+            Class1 = class1;
+            Class2 = class2;
+        }
+
+        public Class1 Class1 { init; get; }
+        public Class2 Class2 { init; get; }
+    }
+
+    public class User
+    {
+        [JsonConstructor]
+        public User(
+            string id,
+            string name,
+            string createdAt,
+            string updatedAt,
+            [JsonPropertyName("e mail")] string email,
+            string testanadditionalfield
+        )
+        {
+            Id = id;
+            Name = name;
+            CreatedAt = createdAt;
+            UpdatedAt = updatedAt;
+            EMail = email;
+            Testanadditionalfield = testanadditionalfield;
+        }
+
+        public string Id { init; get; }
+        public string Name { init; get; }
+        public string CreatedAt { init; get; }
+        public string UpdatedAt { init; get; }
+
+        [JsonPropertyName("e mail")]
+        public string EMail { init; get; }
+        public string Testanadditionalfield { init; get; }
+    }
+