[cmd][lib] switch get_shift_direction to a proper property

library/cadbiom/models/clause_constraints/mcl/CLUnfolder.py

@@ -576,7 +576,8 @@ class CLUnfolder(object):
         """Get the DIMACS codes of the input variables"""
         return self.__inputs
 
-    def get_shift_direction(self):
+    @property
+    def shift_direction(self):
         """
         @return: string "FORWARD" or "BACKWARD"
         """

library/cadbiom/models/clause_constraints/mcl/MCLSolutions.py

@@ -135,7 +135,7 @@ class RawSolution(object):
         self.unfolder = unfolder
         self.shift_step = unfolder.shift_step
         self.current_step = unfolder.current_step
-        self.shift_direction = unfolder.get_shift_direction()
+        self.shift_direction = unfolder.shift_direction
 
     def get_unshift_code(self, var_num):
         """Get the real value of the given variable in the system (remove the shift)