api: Document API change process

api/api_storage.go

@@ -26,6 +26,17 @@ import (
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
 )
 
+//                       MODIFYING THE API INTERFACE
+//
+// When adding / changing methods in this file:
+// * Do the change here
+// * Adjust implementation in `node/impl/`
+// * Run `make gen` - this will:
+//  * Generate proxy structs
+//  * Generate mocks
+//  * Generate markdown docs
+//  * Generate openrpc blobs
+
 // StorageMiner is a low-level interface to the Filecoin network storage miner node
 type StorageMiner interface {
 	Common