### Question:
ImportOp extends AbstractGeoGigOp<RevTree> { public ImportOp setTable(String table) { this.table = table; return this; }  ImportOp setAll(boolean all); ImportOp setTable(String table); ImportOp setOverwrite(boolean overwrite); ImportOp setFidAttribute(String attribute); ImportOp setAlter(boolean alter); ImportOp setDestinationPath(@Nullable String destPath); ImportOp setDataStore(DataStore dataStore); ImportOp setGeometryNameOverride(String geomName); ImportOp setUsePaging(boolean usePaging); ImportOp setAdaptToDefaultFeatureType(boolean adaptToDefaultFeatureType);  }### Answer:
@Test public void testNullDataStore() throws Exception { ImportOp importOp = geogig.command(ImportOp.class); importOp.setTable("table1"); exception.expect(GeoToolsOpException.class); importOp.call(); }