Added min_stake, max_stake. Removed pair as its included in trade.

freqtrade/strategy/interface.py

@@ -384,9 +384,9 @@ class IStrategy(ABC, HyperStrategyMixin):
         """
         return proposed_stake
 
-    def adjust_trade_position(self, pair: str, trade: Trade, current_time: datetime,
-                              current_rate: float, current_profit: float, **kwargs
-                              ) -> Optional[float]:
+    def adjust_trade_position(self, trade: Trade, current_time: datetime,
+                              current_rate: float, current_profit: float, min_stake: float,
+                              max_stake: float, **kwargs) -> Optional[float]:
         """
         Custom trade adjustment logic, returning the stake amount that a trade should be increased.
         This means extra buy orders with additional fees.
@@ -395,11 +395,12 @@ class IStrategy(ABC, HyperStrategyMixin):
 
         When not implemented by a strategy, returns None
 
-        :param pair: Pair that's currently analyzed
         :param trade: trade object.
         :param current_time: datetime object, containing the current datetime
-        :param current_rate: Current buy rate. Use `exchange.get_rate` if you need sell rate.
+        :param current_rate: Current buy rate.
         :param current_profit: Current profit (as ratio), calculated based on current_rate.
+        :param min_stake: Minimal stake size allowed by exchange.
+        :param max_stake: Balance available for trading.
         :param **kwargs: Ensure to keep this here so updates to this won't break your strategy.
         :return float: Stake amount to adjust your trade
         """