https://developers.google.com/apps-script/reference/card-service/material-icon
Class MaterialIcon | Apps Script | Google for Developers
Learn how to use Apps Script Class MaterialIcon. An object that supports all Google Font Icons.
apps scriptclassgoogledevelopers
https://docs.cloud.google.com/nodejs/docs/reference/chat/latest/chat/protos.google.apps.card.v1.materialicon
Class protos.google.apps.card.v1.MaterialIcon (0.24.0) | Node.js client libraries | Google Cloud...