Add "code" to copied marker metadata info

Fixes #36449

src/vs/workbench/parts/markers/common/markersModel.ts

@@ -58,11 +58,14 @@ export class Marker {
 	}
 
 	public toString(): string {
-		return [`file: '${this.marker.resource}'`,
-		`severity: '${Severity.toString(this.marker.severity)}'`,
-		`message: '${this.marker.message}'`,
-		`at: '${this.marker.startLineNumber},${this.marker.startColumn}'`,
-		`source: '${this.marker.source ? this.marker.source : ''}'`].join('\n');
+		return [
+			`file: '${this.marker.resource}'`,
+			`severity: '${Severity.toString(this.marker.severity)}'`,
+			`message: '${this.marker.message}'`,
+			`at: '${this.marker.startLineNumber},${this.marker.startColumn}'`,
+			`source: '${this.marker.source ? this.marker.source : ''}'`,
+			`code: '${this.marker.code ? this.marker.code : ''}'`
+		].join('\n');
 	}
 
 }