This resource is a non-persisted resource used to pass information into and back from an [operation](operations.html). It has no other use, and there is no RESTful endpoint associated with it. This resource is a non-persisted resource used to pass information into and back from an [operation](operations.html). It has no other use, and there is no RESTful endpoint associated with it. If the element is present, it must have either a @value, an @id, or extensions A parameter passed to or received from the operation. This resource is a non-persisted resource used to pass information into and back from an [operation](operations.html). It has no other use, and there is no RESTful endpoint associated with it. The name of the parameter (reference to the operation definition). If the parameter is a data type. If the parameter is a whole resource. A named part of a multi-part parameter.