Index: wflow-py/wflow/wflow_bmi.py
===================================================================
diff -u -r448e5e495de6c7703fa393bb7926cebec867ecf6 -r23e11ea1e378a546e1a3755b9820c95c4b371420
--- wflow-py/wflow/wflow_bmi.py	(.../wflow_bmi.py)	(revision 448e5e495de6c7703fa393bb7926cebec867ecf6)
+++ wflow-py/wflow/wflow_bmi.py	(.../wflow_bmi.py)	(revision 23e11ea1e378a546e1a3755b9820c95c4b371420)
@@ -436,3 +436,13 @@
 
     def set_value_at_indices(self, long_var_name, inds, src):
         raise NotImplementedError
+
+
+
+class BmiRaster(wflowbmi_csdms):
+    def get_grid_shape(self, long_var_name):
+        raise NotImplementedError
+    def get_grid_spacing(self, long_var_name):
+        raise NotImplementedError
+    def get_grid_origin(self, long_var_name):
+        raise NotImplementedError
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