API Reference > ecschema-editing > Diagnostic > createClassDiagnosticClass createClassDiagnosticClass Function Beta Helper method for creating ClassDiagnostic child classes. createClassDiagnosticClass<ARGS extends any[]>(code: string, messageText: string): undefined Parameter Type Description code string The string that uniquely identifies the diagnostic in the format ':'. messageText string The message to associate with the diagnostic class. Defined in ecschema-editing/src/Validation/Diagnostic.ts Line 273 Last Updated: 12 June, 2024