Please provide built-in way to set attributes to the internal Input element. These can be HTML attributes like "autocomplete", "aria-describedby" and others, and also custom attributes if such are required.
Currently the only way to set attributes is programmatically, for example through a custom directive:
https://stackblitz.com/edit/angular-douddd?file=src%2Fapp%2Fapp.component.ts
Related feature request - https://feedback.telerik.com/kendo-angular-ui/1582022-set-area-describedby-and-area-labelledby-to-form-controls