First round of cleanup of runtime abstractions (#156)

dotnet/src/LegacySupport/TrimAttributes/DynamicallyAccessedMemberTypes.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 namespace System.Diagnostics.CodeAnalysis;
 

dotnet/src/LegacySupport/TrimAttributes/DynamicallyAccessedMembersAttribute.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 namespace System.Diagnostics.CodeAnalysis;
 
@@ -39,7 +39,7 @@ internal sealed class DynamicallyAccessedMembersAttribute : Attribute
     /// <param name="memberTypes">The types of members dynamically accessed.</param>
     public DynamicallyAccessedMembersAttribute(DynamicallyAccessedMemberTypes memberTypes)
     {
-        MemberTypes = memberTypes;
+        this.MemberTypes = memberTypes;
     }
 
     /// <summary>

dotnet/src/LegacySupport/TrimAttributes/RequiresDynamicCodeAttribute.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 namespace System.Diagnostics.CodeAnalysis;
 
@@ -22,7 +22,7 @@ internal sealed class RequiresDynamicCodeAttribute : Attribute
     /// </param>
     public RequiresDynamicCodeAttribute(string message)
     {
-        Message = message;
+        this.Message = message;
     }
 
     /// <summary>

dotnet/src/LegacySupport/TrimAttributes/RequiresUnreferencedCodeAttribute.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 namespace System.Diagnostics.CodeAnalysis;
 
@@ -23,7 +23,7 @@ internal sealed class RequiresUnreferencedCodeAttribute : Attribute
     /// </param>
     public RequiresUnreferencedCodeAttribute(string message)
     {
-        Message = message;
+        this.Message = message;
     }
 
     /// <summary>

dotnet/src/LegacySupport/TrimAttributes/UnconditionalSuppressMessageAttribute.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 namespace System.Diagnostics.CodeAnalysis;
 
@@ -23,8 +23,8 @@ internal sealed class UnconditionalSuppressMessageAttribute : Attribute
     /// <param name="checkId">The identifier of the analysis rule the attribute applies to.</param>
     public UnconditionalSuppressMessageAttribute(string category, string checkId)
     {
-        Category = category;
-        CheckId = checkId;
+        this.Category = category;
+        this.CheckId = checkId;
     }
 
     /// <summary>