Fixed duplicated function name

- Just for convenience with type checker tools

src/pascooldevices/DiscretePositionsMotor.py

@@ -263,7 +263,7 @@ class DiscretePositionsMotor(Device):
         return self.motor_position.magnitude
 
     @position.write
-    def position(self, value):
+    def set_position(self, value):
         print("moving motor to %s " % value)
         if self.motor_unit is None or self.motor_lims is None:
             raise RuntimeError(
@@ -288,7 +288,7 @@ class DiscretePositionsMotor(Device):
         return self.motor_position_id
 
     @positionId.write
-    def positionId(self, position_name):
+    def set_positionId(self, position_name):
         if self.unreachable is None:
             raise RuntimeError(
                 '(%s) Moving to PositionID="%s" is not possible. Motor being initialized'
@@ -330,7 +330,7 @@ class DiscretePositionsMotor(Device):
         return json.dumps(allpos)
 
     @jsonConfiguration.write
-    def jsonConfiguration(self, configuration):
+    def set_jsonConfiguration(self, configuration):
         return "not implemented yet"
 
     @attribute(dtype=(str,), max_dim_x=32)