PKI — PKIAuthority module - definition of RequestManager

Under the PKIAuthority module there is an interface call
RegistrationAuthority. This interface basically provides operations through
which the client gets a reference to a object derived from RequestManager.
For all practical purposes the RequestManager is an abstract type, whereas
the derived managers (certificate request manager, key revocation manager,
key recovery manager, key update manager) are concrete. As such, the
definition of RequestManager should be changed from a concrete to an
abstract interface.

/**

• Generic interface for a manager object.
  */
  abstract interface RequestManager
  { ..... }

  ;

Change IDL to make RequestManager and abstract interface