Can I add custom properties to a given @type in JSON-LD?
问题 I'm developing a website that allows users to explore a massive discography. All the data is currently stored in a JSON file, which I'm converting to JSON-LD in order to make it semantic and crawlable by search engines. Schema.org has a standard type for Music Albums, which doesn't have properties for some of the data I store (and present to users) for each album. These properties are marked as errors by Google's structured data validator. My question is: does Google just ignore the custom