Add additional_pairs to strategy

freqtrade/strategy/interface.py

@@ -133,6 +133,19 @@ class IStrategy(ABC):
         :return: DataFrame with sell column
         """
 
+    def additional_pairs(self) -> List[Tuple[str, str]]:
+        """
+        Define additional pair/interval combinations to be cached from the exchange.
+        These pair/interval combinations are non-tradeable, unless they are part
+        of the whitelist as well.
+        For more information, please consult the documentation
+        :return: List of tuples in the format (pair, interval)
+            Sample: return [("ETH/USDT", "5m"),
+                            ("BTC/USDT", "15m"),
+                            ]
+        """
+        return []
+
     def get_strategy_name(self) -> str:
         """
         Returns strategy class name