objectId property

String? objectId
getter/setter pair

A user-supplied object ID for the placeholder identified above that to be created onto a slide.

If you specify an ID, it must be unique among all pages and page elements in the presentation. The ID must start with an alphanumeric character or an underscore (matches regex [a-zA-Z0-9_]); remaining characters may include those as well as a hyphen or colon (matches regex [a-zA-Z0-9_-:]). The length of the ID must not be less than 5 or greater than 50. If you don't specify an ID, a unique one is generated.

Implementation

core.String? objectId;