text: #include <IFid.H>
  Constructs an empty ID. This is needed for serialization.
  Constructs an ID from the given string.
  Copy constructor.
  Destructor (not virtual).
  This factory method creates an ID by aggregating the given list of IDs.
  References CH_assert, and Vector< T >::size().
  Sets the names associated with this identifier.
  Referenced by linearIn().
  Returns the list of names identifying all functions associated with this IFid.
  Referenced by linearOut(), and linearSize().
  Returns true if the given IFid is the same as this one, false otherwise.
  References m_names, and Vector< T >::size().
  References m_names, Vector< T >::push_back(), and Vector< T >::size().
  Referenced by append(), names(), operator=(), operator==(), and setNames().