Override non-empty fields - when it really is enabled and for many subject from the Extender There exists a value in the initial snippet - we use the value from the Extender. This means that you may have unparsable structured information challenge, and parsers can't read through schema markup, so https://google-rich-snippet-autom79900.boyblogguide.com/27900531/the-json-schema-define-new-basetype-diaries