Fix import statement, and add comment about follow-up PR for treasure map id length.

Co-authored-by: David Núñez <david@nucypher.com>

nucypher/policy/policies.py

@@ -35,10 +35,14 @@ from nucypher.crypto.utils import keccak_digest
 from nucypher.crypto.umbral_adapter import PublicKey, KeyFrag, Signature
 from nucypher.crypto.utils import construct_policy_id
 from nucypher.network.middleware import RestMiddleware
+from nucypher.policy.reservoir import (
+    make_federated_staker_reservoir,
+    MergedReservoir,
+    PrefetchStrategy,
+    make_decentralized_staker_reservoir
+)
 from nucypher.utilities.concurrency import WorkerPool, AllAtOnceFactory
 from nucypher.utilities.logging import Logger
-from .reservoir import make_federated_staker_reservoir, MergedReservoir, PrefetchStrategy, \
-    make_decentralized_staker_reservoir
 
 
 class Arrangement:

nucypher/utilities/porter/control/specifications/fields/treasuremapid.py

@@ -27,6 +27,6 @@ class TreasureMapID(BaseField, fields.String):
 
     def _validate(self, value):
         treasure_map_id = bytes.fromhex(value)
-        # FIXME federated has map id length 32 bytes but decentralized has length 16 bytes ... huh?
+        # FIXME federated has map id length 32 bytes but decentralized has length 16 bytes ... huh? - #2725
         if len(treasure_map_id) != TreasureMap.ID_LENGTH and len(treasure_map_id) != HRAC_LENGTH:
             raise InvalidInputData(f"Could not convert input for {self.name} to a valid TreasureMap ID: invalid length")