is the broadcaster interface for sending "approveUpdate" and "updated" events.
Description
specifies a (form) component which is bound to a data source.
The interface provides the possibility of committing its respective
data to a data source it is bound to. A commit will be
performed by the environment (usually, a FormController).
For example, suppose you have a data-bound control that is connected
to a database field. Each time the control loses its focus, the
model (component) of the control is triggered by the environment
to store its value in the database field.
