Describes the structure of a projection definition.
A projection definition instructs the class compiler to perform specified operations when a class definition is compiled or removed. A projection defines the name of a projection class (derived from the %Projection.AbstractProjection
class) that implements methods that are called when the compilation of a class is complete and when a class definition is removed (either because it is being deleted or because the class is about to be recompiled).
A projection definition has the following structure:
Projection name As projection_class (parameter_list) ;