public Slot setEnd(Date value) { 
        if (this.end == null)
          this.end = new InstantType();
        this.end.setValue(value);
      return this;
    }
public Slot setEnd ( Date value ) { if ( this . end == null ) this . end = new InstantType ( ) ; this . end . setValue ( value ) ; return this ; }
@param value Date/Time that the slot is to conclude.