Get all order types for a merchant

Retrieves all order types for a merchant.
Merchants can create custom order types using the Clover Setup App. These custom order types can be associated with a system order type. See Return a list of system order types.
Custom order types can support items in:

• all categories (filterCategories=false). To view the categories, send a GET request to Get all categories.
• a subset of the merchant’s categories (filterCategories=true and categories property contains the list of supported categories). Categories display when an order type that supports a subset of the categories is expanded.