adding omitempty to request object (#15031)

api/server/structs/endpoints_beacon.go

@@ -78,8 +78,8 @@ type GetBlockHeaderResponse struct {
 }
 
 type GetValidatorsRequest struct {
-	Ids      []string `json:"ids"`
-	Statuses []string `json:"statuses"`
+	Ids      []string `json:"ids,omitempty"`
+	Statuses []string `json:"statuses,omitempty"`
 }
 
 type GetValidatorsResponse struct {

changelog/james-prysm_omit-empty-status-request.md

@@ -0,0 +1,3 @@
+### Changed
+
+- changed request object for `POST /eth/v1/beacon/states/head/validators` to omit the field if empty for satisfying other clients.