Address #630

Author: lol768

src/GraphQL.Primitives/GraphQLRequest.cs

@@ -1,3 +1,5 @@
+using System.Diagnostics.CodeAnalysis;
+
 namespace GraphQL;
 
 /// <summary>
@@ -13,6 +15,7 @@ public class GraphQLRequest : Dictionary<string, object>, IEquatable<GraphQLRequ
     /// <summary>
     /// The Query
     /// </summary>
+    [StringSyntax("GraphQL")]
     public string Query
     {
         get => TryGetValue(QUERY_KEY, out object value) ? (string)value : null;
@@ -48,7 +51,7 @@ public object? Variables
 
     public GraphQLRequest() { }
 
-    public GraphQLRequest(string query, object? variables = null, string? operationName = null, Dictionary<string, object?>? extensions = null)
+    public GraphQLRequest([StringSyntax("GraphQL")] string query, object? variables = null, string? operationName = null, Dictionary<string, object?>? extensions = null)
     {
         Query = query;
         Variables = variables;

src/GraphQL.Primitives/StringSyntaxAttribute.cs

@@ -0,0 +1,17 @@
+#if !NET7_0_OR_GREATER
+
+namespace System.Diagnostics.CodeAnalysis;
+
+/// <summary>
+/// Stub
+/// </summary>
+public sealed class StringSyntaxAttribute : Attribute
+{
+    public const string CompositeFormat = nameof(CompositeFormat);
+
+    public StringSyntaxAttribute(string syntax)
+    {
+    }
+
+}
+#endif