Equals [NotNullWhen(true)]

src/libraries/Microsoft.Extensions.Primitives/ref/Microsoft.Extensions.Primitives.cs

@@ -59,7 +59,7 @@ public partial interface IChangeToken
         public bool Equals(Microsoft.Extensions.Primitives.StringSegment other) { throw null; }
         public static bool Equals(Microsoft.Extensions.Primitives.StringSegment a, Microsoft.Extensions.Primitives.StringSegment b, System.StringComparison comparisonType) { throw null; }
         public bool Equals(Microsoft.Extensions.Primitives.StringSegment other, System.StringComparison comparisonType) { throw null; }
-        public override bool Equals(object? obj) { throw null; }
+        public override bool Equals([System.Diagnostics.CodeAnalysis.NotNullWhen(true)] object? obj) { throw null; }
         public bool Equals(string? text) { throw null; }
         public bool Equals(string text, System.StringComparison comparisonType) { throw null; }
         public override int GetHashCode() { throw null; }
@@ -138,7 +138,7 @@ public void Reset() { }
         public override bool Equals(object? obj) { throw null; }
         public bool Equals(string? other) { throw null; }
         public static bool Equals(string? left, Microsoft.Extensions.Primitives.StringValues right) { throw null; }
-        public bool Equals(string?[]? other) { throw null; }
+        public bool Equals([System.Diagnostics.CodeAnalysis.NotNullWhen(true)] string?[]? other) { throw null; }
         public static bool Equals(string?[] left, Microsoft.Extensions.Primitives.StringValues right) { throw null; }
         public Microsoft.Extensions.Primitives.StringValues.Enumerator GetEnumerator() { throw null; }
         public override int GetHashCode() { throw null; }

src/libraries/Microsoft.Extensions.Primitives/src/StringSegment.cs

@@ -190,7 +190,7 @@ public static int Compare(StringSegment a, StringSegment b, StringComparison com
         /// </summary>
         /// <param name="obj">An object to compare with this object.</param>
         /// <returns><see langword="true" /> if the current object is equal to the other parameter; otherwise, <see langword="false" />.</returns>
-        public override bool Equals(object? obj)
+        public override bool Equals([NotNullWhen(true)] object? obj)
         {
             return obj is StringSegment segment && Equals(segment);
         }

src/libraries/Microsoft.Extensions.Primitives/src/StringValues.cs

@@ -617,7 +617,7 @@ public static bool Equals(StringValues left, StringValues right)
         /// </summary>
         /// <param name="other">The string array to compare to this instance.</param>
         /// <returns><c>true</c> if the value of <paramref name="other"/> is the same as this instance; otherwise, <c>false</c>.</returns>
-        public bool Equals(string?[]? other) => other != null && Equals(this, new StringValues(other));
+        public bool Equals([NotNullWhen(true)] string?[]? other) => other != null && Equals(this, new StringValues(other));
 
         /// <inheritdoc cref="Equals(StringValues, string)" />
         public static bool operator ==(StringValues left, string? right) => Equals(left, new StringValues(right));