[action] [PR:691] Add get_liquid_cooling() method to chassis base

sonic_platform_base/chassis_base.py

@@ -185,6 +185,16 @@ def is_liquid_cooled(self):
         """
         return False
 
+    def get_liquid_cooling(self):
+        """
+        Retrieves the liquid cooling object of the chassis
+
+        Returns:
+            An object derived from LiquidCoolingBase representing the
+            chassis liquid cooling subsystem (including leakage sensors).
+        """
+        return NotImplementedError
+
     def init_midplane_switch(self):
         """
         Initializes the midplane functionality of the modular chassis. For

tests/chassis_base_test.py

@@ -95,6 +95,10 @@ def is_liquid_cooled(self):
         liquid = LiquidCooledChassis()
         assert liquid.is_liquid_cooled() is True
 
+    def test_get_liquid_cooling(self):
+        chassis = ChassisBase()
+        assert chassis.get_liquid_cooling() is NotImplementedError
+
     def test_switch_host_module_at_index_zero(self):
         '''
         On a BMC chassis, only the Switch-Host is modelled as a module.