add REST call signatures for getStateRandao and getNextWithdrawals (#5033)

beacon_chain/spec/eth2_apis/rest_beacon_calls.nim

@@ -86,6 +86,12 @@ proc getStateValidatorBalances*(state_id: StateIdent
      meth: MethodGet.}
   ## https://ethereum.github.io/beacon-APIs/#/Beacon/getStateValidators
 
+proc getStateRandao*(state_id: StateIdent
+             ): RestResponse[GetStateRandaoResponse] {.
+     rest, endpoint: "/eth/v1/beacon/states/{state_id}/randao",
+     meth: MethodGet.}
+  ## https://ethereum.github.io/beacon-APIs/#/Beacon/getStateRandao
+
 proc getEpochCommittees*(state_id: StateIdent, epoch: Option[Epoch],
                         ): RestResponse[GetEpochCommitteesResponse] {.
      rest, endpoint: "/eth/v1/beacon/states/{state_id}/committees",

beacon_chain/spec/eth2_apis/rest_beacon_client.nim

@@ -9,7 +9,7 @@
 import
   chronos, presto/client,
   "."/[
-    rest_beacon_calls, rest_config_calls, rest_debug_calls,
+    rest_beacon_calls, rest_builder_calls, rest_config_calls, rest_debug_calls,
     rest_keymanager_calls, rest_light_client_calls,
     rest_node_calls, rest_validator_calls,
     rest_nimbus_calls, rest_common
@@ -17,7 +17,7 @@ import
 
 export
   chronos, client,
-  rest_beacon_calls, rest_config_calls, rest_debug_calls,
+  rest_beacon_calls, rest_builder_calls, rest_config_calls, rest_debug_calls,
   rest_keymanager_calls, rest_light_client_calls,
   rest_node_calls, rest_validator_calls,
   rest_nimbus_calls, rest_common

beacon_chain/spec/eth2_apis/rest_builder_calls.nim

@@ -0,0 +1,20 @@
+# Copyright (c) 2023 Status Research & Development GmbH
+# Licensed and distributed under either of
+#   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
+#   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
+{.push raises: [].}
+
+import
+  chronos, presto/client, chronicles,
+  ".."/[helpers, forks, eth2_ssz_serialization],
+  "."/[rest_types, rest_common, eth2_rest_serialization]
+
+export chronos, client, rest_types, eth2_rest_serialization
+
+proc getNextWithdrawals*(state_id: StateIdent
+             ): RestResponse[GetNextWithdrawalsResponse] {.
+     rest, endpoint: "/eth/v1/builder/states/{state_id}/expected_withdrawals",
+     meth: MethodGet.}
+  ## https://ethereum.github.io/beacon-APIs/?urls.primaryName=v2.4.0#/Builder/getNextWithdrawals

beacon_chain/spec/eth2_apis/rest_types.nim

@@ -672,6 +672,8 @@ type
   GetStateValidatorBalancesResponse* = DataEnclosedObject[seq[RestValidatorBalance]]
   GetStateValidatorResponse* = DataEnclosedObject[RestValidator]
   GetStateValidatorsResponse* = DataOptimisticObject[seq[RestValidator]]
+  GetStateRandaoResponse* = DataOptimisticObject[RestEpochRandao]
+  GetNextWithdrawalsResponse* = DataOptimisticObject[seq[Withdrawal]]
   GetSyncCommitteeDutiesResponse* = DataOptimisticObject[seq[RestSyncCommitteeDuty]]
   GetSyncingStatusResponse* = DataEnclosedObject[RestSyncInfo]
   GetVersionResponse* = DataEnclosedObject[RestNodeVersion]