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-rw-r--r--src/SMAPI.Toolkit.CoreInterfaces/ISemanticVersion.cs4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/SMAPI.Toolkit.CoreInterfaces/ISemanticVersion.cs b/src/SMAPI.Toolkit.CoreInterfaces/ISemanticVersion.cs
index 7998272f..dc226b7c 100644
--- a/src/SMAPI.Toolkit.CoreInterfaces/ISemanticVersion.cs
+++ b/src/SMAPI.Toolkit.CoreInterfaces/ISemanticVersion.cs
@@ -1,4 +1,5 @@
using System;
+using System.Diagnostics.CodeAnalysis;
namespace StardewModdingAPI
{
@@ -28,6 +29,9 @@ namespace StardewModdingAPI
** Accessors
*********/
/// <summary>Whether this is a prerelease version.</summary>
+#if NET5_0_OR_GREATER
+ [MemberNotNullWhen(true, nameof(ISemanticVersion.PrereleaseTag))]
+#endif
bool IsPrerelease();
/// <summary>Get whether this version is older than the specified version.</summary>