in Sources/TwitterTextEditor/TextEditorView.swift [168:179]
func textEditorView(_ textEditorView: TextEditorView,
updateAttributedString attributedString: NSAttributedString,
completion: @escaping (NSAttributedString?) -> Void)
}
/**
A protocol that represents a text editor view change.
- SeeAlso:
- `TextEditorViewChangeObserver.textEditorView(_:didChangeWithChangeResult:)`
*/
public protocol TextEditorViewChangeResult {