def safe_inject_into_file(relative_path, *args, **options, &block)
      inject_into_file(relative_path, *args, **(options.merge(force: false)), &block)
    end
def safe_inject_into_file(relative_path, *args, **options, &block)
      inject_into_file(relative_path, *args, **(options.merge(force: false)), &block)
    end
Safely prepend to file checking if content is not already present

 @api public