def get_user_availability(opts)
      opts = opts.clone
      req = build_soap! do |type, builder|
        if(type == :header)
        else
        builder.nbuild.GetUserAvailabilityRequest {|x|
          x.parent.default_namespace = @default_ns
          builder.time_zone!(opts[:time_zone])
          builder.nbuild.MailboxDataArray {
          opts[:mailbox_data].each do |mbd|
            builder.mailbox_data!(mbd)
          end
          }
          builder.free_busy_view_options!(opts[:free_busy_view_options])
          builder.suggestions_view_options!(opts[:suggestions_view_options])
        }
        end
      end

      do_soap_request(req, response_class: EwsSoapFreeBusyResponse)
    end
def get_user_availability(opts)
      opts = opts.clone
      req = build_soap! do |type, builder|
        if(type == :header)
        else
        builder.nbuild.GetUserAvailabilityRequest {|x|
          x.parent.default_namespace = @default_ns
          builder.time_zone!(opts[:time_zone])
          builder.nbuild.MailboxDataArray {
          opts[:mailbox_data].each do |mbd|
            builder.mailbox_data!(mbd)
          end
          }
          builder.free_busy_view_options!(opts[:free_busy_view_options])
          builder.suggestions_view_options!(opts[:suggestions_view_options])
        }
        end
      end

      do_soap_request(req, response_class: EwsSoapFreeBusyResponse)
    end
Provides detailed information about the availability of a set of users, rooms, and resources
 within a specified time window.
 @see http://msdn.microsoft.com/en-us/library/aa564001.aspx
 @param [Hash] opts
 @option opts [Hash] :time_zone The TimeZone data
   Example: {:bias => 'UTC offset in minutes',
   :standard_time => {:bias => 480, :time => '02:00:00',
     :day_order => 5, :month => 10, :day_of_week => 'Sunday'},
   :daylight_time => {same options as :standard_time}}
 @option opts [Array<Hash>] :mailbox_data Data for the mailbox to query
   Example: [{:attendee_type => 'Organizer|Required|Optional|Room|Resource',
   :email =>{:name => 'name', :address => 'email', :routing_type => 'SMTP'},
   :exclude_conflicts => true|false }]
 @option opts [Hash] :free_busy_view_options
   Example: {:time_window => {:start_time => DateTime,:end_time => DateTime},
   :merged_free_busy_interval_in_minutes => minute_int,
   :requested_view => None|MergedOnly|FreeBusy|FreeBusyMerged|Detailed
     |DetailedMerged} (optional)
 @option opts [Hash] :suggestions_view_options (optional)
 @todo Finish out :suggestions_view_options