tokenizer
An input tokenizer that provides information about the granularity of text units.
Declaration
var tokenizer: any UITextInputTokenizer { get }Discussion
Standard units of granularity include characters, words, lines, and paragraphs. In most cases, you may lazily create and assign an instance of a subclass of UITextInputStringTokenizer for this purpose. If you require different behavior than this system-provided tokenizer, you can create a custom tokenizer that adopts the UITextInputTokenizer protocol.