Mark a field as mock. It also registers the mock as a bean in the SpringContext.
This way the mock is injected in every bean that depends on.
The class containing annotated fields has to be annotated with
@EnableMockedBean.
The name of this bean, or if plural, aliases for this bean. If left unspecified
the name of the bean is the name of the annotated method. If specified, the method
name is ignored.