# File lib/mongo/lint.rb, line 24
    def validate_camel_case_read_preference(read_pref)
      return unless enabled?
      return if read_pref.nil?
      unless read_pref.is_a?(Hash)
        raise Error::LintError, "Read preference is not a hash: #{read_pref}"
      end
      validate_camel_case_read_preference_mode(read_pref[:mode] || read_pref['mode'])
    end