{
  global:
    gpr_*;
    extern "C++" {
        grpc::*;
        grpc_*;
        tsi_*;
        typeinfo*grpc::*;
        vtable*grpc::*;
        non-virtual*thunk*to*grpc*;
        absl_status_to_grpc_error*;
    };
  local:
    *;
};