var graphicsModel = Graphics.getModel(MyAvatar.sessionUUID);
var partsCount = 0;
graphicsModel.meshes.forEach(function(mesh) {
    partsCount += mesh.numParts;
    print(partsCount);
});
var matEntities = [];
var defaultAvatarMaterials = [];
var entityAttachments = MyAvatar.getAvatarEntitiesVariant();

entityAttachments.forEach(function(avatarEntity) {
    if (avatarEntity.properties.type === "Material") {
        defaultAvatarMaterials.push(avatarEntity);
        matEntities.push(avatarEntity);
        Entities.deleteEntity(avatarEntity.id);
    }
});

// away
var matEntities = [];
for (var i = 0; i < partsCount; i++ ) {
    matEntities.push(Entities.addEntity({
        type: "Material",
        name: "Becky Material " + i,
        parentID: MyAvatar.sessionUUID,
        materialURL: "materialData",
        priority: 1,
        parentMaterialName: i,
        materialData: JSON.stringify({
            "materialVersion": 1,
            "materials": {
                "opacity": 0.5,
                "albedo": [
                    1,
                    0,
                    0
                ]
            }
        })
    }, true));
}

// headphones off

// do not disturb

// available (if saved materials, restore them)