Gets and sets the vertical coordinate system wkt
to be used to select the target spatial reference for the
TransformationInfo object (used to populate a table row).
The TargetVcsWkt is optional. The default is null. The TargetWkt should also be defined if a TargetVcsWkt is defined. If the TargetWkt and the TargetVcsWkt are set, then the corresponding TargetSpatialReference with that wkt and vcsWkt will be selected for the TransformationInfo object. Note: only one of: o TargetSpatialReference o TargetWkid, and TargetVcsWkid if applicable o TargetWkt, and TargetVcsWkt if applicable need be set. If the TargetSpatialReference is set, Wkids and Wkts are ignored. If the TargetSpatialReference is null, then Wkids are used. If the Wkids are 0 (or less), then the Wkts are used.