Use 'is not null' pattern for consistency with nullable checks

Copilot · eiriktsarpalis · Copilot · commit 156d1706a988 · 2025-10-30T16:30:35.000Z
Co-authored-by: eiriktsarpalis &lt;2813363+eiriktsarpalis@users.noreply.github.com&gt;
diff --git a/src/ModelContextProtocol.Core/Protocol/ElicitRequestParams.cs b/src/ModelContextProtocol.Core/Protocol/ElicitRequestParams.cs
@@ -301,14 +301,14 @@ public override void Write(Utf8JsonWriter writer, PrimitiveSchemaDefinition valu
                         {
                             writer.WriteNumber("maximum", numberSchema.Maximum.Value);
                         }
-                        if (numberSchema.Default.HasValue)
+                        if (numberSchema.Default is not null)
                         {
                             writer.WriteNumber("default", numberSchema.Default.Value);
                         }
                         break;
 
                     case BooleanSchema booleanSchema:
-                        if (booleanSchema.Default.HasValue)
+                        if (booleanSchema.Default is not null)
                         {
                             writer.WriteBoolean("default", booleanSchema.Default.Value);
                         }

Original file line number	Diff line number	Diff line change
`@@ -301,14 +301,14 @@ public override void Write(Utf8JsonWriter writer, PrimitiveSchemaDefinition valu`
`301`	`301`	`{`
`302`	`302`	`writer.WriteNumber("maximum", numberSchema.Maximum.Value);`
`303`	`303`	`}`
`304`		`- if (numberSchema.Default.HasValue)`
	`304`	`+ if (numberSchema.Default is not null)`
`305`	`305`	`{`
`306`	`306`	`writer.WriteNumber("default", numberSchema.Default.Value);`
`307`	`307`	`}`
`308`	`308`	`break;`
`309`	`309`
`310`	`310`	`case BooleanSchema booleanSchema:`
`311`		`- if (booleanSchema.Default.HasValue)`
	`311`	`+ if (booleanSchema.Default is not null)`
`312`	`312`	`{`
`313`	`313`	`writer.WriteBoolean("default", booleanSchema.Default.Value);`
`314`	`314`	`}`