Creates a new offer.
Sets the availability.
Gets the availability.
Gets the price.
Sets the price.
Gets the price currency.
Sets the price currency.
Gets the url.
Sets the url.
Boolean determining whether the object is a child or not.
Gets a boolean determining whether the schema object is a root object or not.
Adds a schema object field to the schema object.
Adds an array of schema objects to the schema object.
Adds a field to the schema object.
Removes a field from the schema object.
Converts the schema object to a string that represent a JSON-LD object.
http://schema.org/Offer