code: public BytesWritable evaluate(BytesWritable geomref) {
  		if (geomref == null || geomref.getLength() == 0){
  			LogUtils.Log_ArgumentsNull(LOG);
  			return null;
  		}
  
  		OGCGeometry ogcGeometry = GeometryUtils.geometryFromEsriShape(geomref);
  		if (ogcGeometry == null){
  			LogUtils.Log_ArgumentsNull(LOG);
  			return null;
  		}
  
  		if (GeometryUtils.getType(geomref) == GeometryUtils.OGCType.ST_LINESTRING) {
  			MultiPath lines = (MultiPath)(ogcGeometry.getEsriGeometry());
  			int wkid = GeometryUtils.getWKID(geomref);
  			SpatialReference spatialReference = null;
  			if (wkid != GeometryUtils.WKID_UNKNOWN) {
  				spatialReference = SpatialReference.create(wkid);
  			}
  			return GeometryUtils.geometryToEsriShapeBytesWritable(OGCGeometry.createFromEsriGeometry(lines.getPoint(lines.getPointCount()-1),
  																									 spatialReference));
  		} else {
  			LogUtils.Log_InvalidType(LOG, GeometryUtils.OGCType.ST_LINESTRING, GeometryUtils.getType(geomref));
  			return null;
  		}
  	}
docs: Return the last point of the ST_Linestring.
  @param geomref hive geometry bytes
  @return byte-reference of the last ST_Point