public final class Meta
Meta is a factory class for creating the meta expressions that refer to the metadata properties of the document.
A metadata expression refering to the ID of the document.
public static var id: MetaExpressionProtocol
A metadata expression refering to the sequence number of the document. The sequence number indicates how recently the document has been changed. If one document’s
sequenceis greater than another’s, that means it was changed more recently.
public static var sequence: MetaExpressionProtocol