ObjC code should not use "FLT" prefix
The FLT prefix is the prefix used by code written and published by the Flutter project. Your code should use its own prefix, per Apple's naming conventions, to prevent collisions with Flutter code (which would cause undefined behavior at runtime).
@stuartmorgan alrighty, where can I remove that?
You'll need to register your own Dart implementation of the platform interface (similar to this one), switch to your own Pigeon definition that doesn't use "FLT" as a prefix, and rename the main ObjC plugin class.
@stuartmorgan it's holiday in Europe now, so we will be away until mid-august. If you need it changed more urgently because Flutter is finally introducing videos let me know.