Comma-separated fields to return. id is accepted as an alias for
company_id, which is always included. technographics requests the
complete nested technology array and stock_tickers every listing of
the company's stock; their child fields cannot be selected or used as
filters. If the caller lacks the company:technographics scope,
technographics is omitted; stock_tickers needs no scope. Omitting
fields uses the endpoint's default projection. A single-company read
returns every scalar field and each nested expansion that is published
and authorized.