public Interface RelationshipPropertyValidators

       Format Definition:  This property is defined by the following
      notation:

       attendee   = "ATTENDEE" attparam ":" cal-address CRLF

       attparam   = *(
                  ;
                  ; The following are OPTIONAL,
                  ; but MUST NOT occur more than once.
                  ;
                  (";" cutypeparam) / (";" memberparam) /
                  (";" roleparam) / (";" partstatparam) /
                  (";" rsvpparam) / (";" deltoparam) /
                  (";" delfromparam) / (";" sentbyparam) /
                  (";" cnparam) / (";" dirparam) /
                  (";" languageparam) /
                  ;
                  ; The following is OPTIONAL,
                  ; and MAY occur more than once.
                  ;
                  (";" other-param)
                  ;
                  )

       Format Definition:  This property is defined by the following
      notation:

       contact    = "CONTACT" contparam ":" text CRLF

       contparam  = *(
                  ;
                  ; The following are OPTIONAL,
                  ; but MUST NOT occur more than once.
                  ;
                  (";" altrepparam) / (";" languageparam) /
                  ;
                  ; The following is OPTIONAL,
                  ; and MAY occur more than once.
                  ;
                  (";" other-param)
                  ;
                  )

       Format Definition:  This property is defined by the following
      notation:

       organizer  = "ORGANIZER" orgparam ":"
                    cal-address CRLF

       orgparam   = *(
                  ;
                  ; The following are OPTIONAL,
                  ; but MUST NOT occur more than once.
                  ;
                  (";" cnparam) / (";" dirparam) / (";" sentbyparam) /
                  (";" languageparam) /
                  ;
                  ; The following is OPTIONAL,
                  ; and MAY occur more than once.
                  ;
                  (";" other-param)
                  ;
                  )

       Format Definition:  This property is defined by the following
      notation:

       recurid    = "RECURRENCE-ID" ridparam ":" ridval CRLF

       ridparam   = *(
                  ;
                  ; The following are OPTIONAL,
                  ; but MUST NOT occur more than once.
                  ;
                  (";" "VALUE" "=" ("DATE-TIME" / "DATE")) /
                  (";" tzidparam) / (";" rangeparam) /
                  ;
                  ; The following is OPTIONAL,
                  ; and MAY occur more than once.
                  ;
                  (";" other-param)
                  ;
                  )

       ridval     = date-time / date
       ;Value MUST match value type

       Format Definition:  This property is defined by the following
      notation:

       related    = "RELATED-TO" relparam ":" text CRLF

       relparam   = *(
                  ;
                  ; The following is OPTIONAL,
                  ; but MUST NOT occur more than once.
                  ;
                  (";" reltypeparam) /
                  ;
                  ; The following is OPTIONAL,
                  ; and MAY occur more than once.
                  ;
                  (";" other-param)
                  ;
                  )

       Format Definition:  This property is defined by the following
      notation:

       uid        = "UID" uidparam ":" text CRLF

       uidparam   = *(";" other-param)

       Format Definition:  This property is defined by the following
      notation:

       url        = "URL" urlparam ":" uri CRLF

       urlparam   = *(";" other-param)