warningOnly property
True if this protected range will show a warning when editing.
Warning-based protection means that every user can edit data in the
protected range, except editing will prompt a warning asking the user to
confirm the edit. When writing: if this field is true, then editors are
ignored. Additionally, if this field is changed from true to false and the
editors field is not set (nor included in the field mask), then the
editors will be set to all the editors in the document.
Implementation
core.bool? warningOnly;