OptionalifStore the document only if it still has this revision.
OptionalifStore the document only if it does not exist.
OptionalmetadataFields to store with the document: strings, numbers (whole numbers are
stored as integers), booleans, dates, or values tagged as { type, value }.
One document of Documents.putMany.
Text (a string, or bytes that are valid UTF-8) travels in batches; other content, or text over 16 MiB, is stored on its own.