In Schema.org, when defining structure for restaurant menu page, you can define dietary restrictions, for example: Vegan, LowFat, GlutenFree. But how can you define that a certain menu item belongs to numerous categories?
In the spec, on https://schema.org/suitableForDiet, it shows an example for a single dietary restriction per item:
"suitableForDiet": "http://schema.org/LowFatDiet"
but I need something that is more close to array, like so:
"suitableForDiet": [
"http://schema.org/LowFatDiet",
"https://schema.org/GlutenFreeDiet",
"https://schema.org/VeganDiet"
]
However I did not see an array as a part of the spec. Any idea?