fixed bug in smp adapter

backend/recorder_adapters/extron_smp.py

@@ -388,7 +388,7 @@ class SMP(TelnetAdapter, RecorderAdapter):
         self.tn.write("{}YRCDR\n".format(self.esc_char))
         return int(TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line()))
 
-    def is_recording(self):
+    def is_recording(self) -> bool:
         return self.get_recording_status() == 1
 
     def extent_recording_time(self, extension_time: int):
@@ -723,9 +723,6 @@ class SMP(TelnetAdapter, RecorderAdapter):
         some advanced options skipped
     """
 
-    def is_recording(self) -> bool:
-        pass
-
     def get_input_hdcp_status(self, input_number: int):
         """
         returns:
@@ -790,6 +787,7 @@ def main():
 
     print(smp)
     print(smp.get_recording_status())
+    print(smp.is_recording())
 
     exit()
     smp._login()