Add Preserve attribute.

Author: ChebanovDD

src/UnityMvvmToolkit.Core/Attributes/PreserveAttribute.cs

@@ -0,0 +1,15 @@
+using System;
+
+namespace UnityMvvmToolkit.Core.Attributes
+{
+    /// <summary>
+    ///   <para>PreserveAttribute prevents byte code stripping from removing a class, method, field, or property.</para>
+    /// </summary>
+    [AttributeUsage(
+        AttributeTargets.Assembly | AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Enum |
+        AttributeTargets.Constructor | AttributeTargets.Method | AttributeTargets.Property | AttributeTargets.Field |
+        AttributeTargets.Event | AttributeTargets.Interface | AttributeTargets.Delegate, Inherited = false)]
+    public class PreserveAttribute : Attribute
+    {
+    }
+}

src/UnityMvvmToolkit.Core/Internal/ObjectWrappers/CommandWrapper.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using UnityMvvmToolkit.Core.Attributes;
 using UnityMvvmToolkit.Core.Interfaces;
 using UnityMvvmToolkit.Core.Internal.Interfaces;
 
@@ -15,6 +16,7 @@ internal sealed class CommandWrapper<TCommandValueType> : ICommandWrapper
 
         private ICommand<TCommandValueType> _command;
 
+        [Preserve]
         public CommandWrapper(IParameterValueConverter<TCommandValueType> parameterConverter)
         {
             _commandId = -1;

src/UnityMvvmToolkit.Core/Internal/ObjectWrappers/PropertyWrapper.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Runtime.CompilerServices;
+using UnityMvvmToolkit.Core.Attributes;
 using UnityMvvmToolkit.Core.Interfaces;
 using UnityMvvmToolkit.Core.Internal.Interfaces;
 
@@ -16,6 +17,7 @@ internal sealed class PropertyWrapper<TSourceType, TValueType> : IProperty<TValu
         private TSourceType _sourceValue;
         private IProperty<TSourceType> _property;
 
+        [Preserve]
         public PropertyWrapper(IPropertyValueConverter<TSourceType, TValueType> valueConverter)
         {
             _converterId = -1;

src/UnityMvvmToolkit.UnityPackage/Assets/Plugins/UnityMvvmToolkit/Runtime/Core/Attributes/PreserveAttribute.cs

@@ -0,0 +1,15 @@
+using System;
+
+namespace UnityMvvmToolkit.Core.Attributes
+{
+    /// <summary>
+    ///   <para>PreserveAttribute prevents byte code stripping from removing a class, method, field, or property.</para>
+    /// </summary>
+    [AttributeUsage(
+        AttributeTargets.Assembly | AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Enum |
+        AttributeTargets.Constructor | AttributeTargets.Method | AttributeTargets.Property | AttributeTargets.Field |
+        AttributeTargets.Event | AttributeTargets.Interface | AttributeTargets.Delegate, Inherited = false)]
+    public class PreserveAttribute : Attribute
+    {
+    }
+}

src/UnityMvvmToolkit.UnityPackage/Assets/Plugins/UnityMvvmToolkit/Runtime/Core/Attributes/PreserveAttribute.cs.meta

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using UnityMvvmToolkit.Core.Attributes;
 using UnityMvvmToolkit.Core.Interfaces;
 using UnityMvvmToolkit.Core.Internal.Interfaces;
 
@@ -15,6 +16,7 @@ internal sealed class CommandWrapper<TCommandValueType> : ICommandWrapper
 
         private ICommand<TCommandValueType> _command;
 
+        [Preserve]
         public CommandWrapper(IParameterValueConverter<TCommandValueType> parameterConverter)
         {
             _commandId = -1;

src/UnityMvvmToolkit.UnityPackage/Assets/Plugins/UnityMvvmToolkit/Runtime/Core/Internal/ObjectWrappers/CommandWrapper.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Runtime.CompilerServices;
+using UnityMvvmToolkit.Core.Attributes;
 using UnityMvvmToolkit.Core.Interfaces;
 using UnityMvvmToolkit.Core.Internal.Interfaces;
 
@@ -16,6 +17,7 @@ internal sealed class PropertyWrapper<TSourceType, TValueType> : IProperty<TValu
         private TSourceType _sourceValue;
         private IProperty<TSourceType> _property;
 
+        [Preserve]
         public PropertyWrapper(IPropertyValueConverter<TSourceType, TValueType> valueConverter)
         {
             _converterId = -1;