def report_utils(version = nil)
      version = api_config.default_version if version.nil?
      # Check if version exists.
      if !api_config.versions.include?(version)
        raise AdsCommon::Errors::Error, "Unknown version '%s'" % version
      end
      return AdwordsApi::ReportUtils.new(self, version)
    end
def report_utils(version = nil)
      version = api_config.default_version if version.nil?
      # Check if version exists.
      if !api_config.versions.include?(version)
        raise AdsCommon::Errors::Error, "Unknown version '%s'" % version
      end
      return AdwordsApi::ReportUtils.new(self, version)
    end
Returns an instance of ReportUtils object with all utilities relevant to
 the reporting.

 Args:
 - version: version of the API to use (optional).