felginep

class Fastlane::FastFile # from https://github.com/fastlane/fastlane/blob/master/fastlane/lib/fastlane/fast_file.rb

  # Hash that raises an error when we access a missing value
  class RequiredOptions < Hash

    def initialize(options, lane)
      options.each { |key, value| self[key] = value }
      @lane = lane
    end