TITLE is How to get calendar folders only using CreateSearchFolderRequest

hi !

By soap, i need to get the list of all calendars.
I understand one calendar=one folder so i just to get all the folders of calendar kind.

According the soap.txt doc, i should use CreateSearchFolderRequest but, i didn't see the attribut to specify the kind....
<CreateSearchFolderRequest>
<search name="..." query="..." [types="..."] [sortBy="..."] l="{folder}" [f="{flags}"] [color="{color}"]/>
</CreateSearchFolderRequest>
is it Types ?

I doubt cause when i get a list of folder using GetFolderRequest , the array response is like :
[18] => Array
(
[F] => #
[ID] => 15
[REV] => 1
[I4NEXT] => 5805
[S] => 0
[I4MS] => 61075
[MS] => 1
[NAME] => Tasks
[N] => 2
[RGB] => #000000
[L] => 1
[VIEW] => task
)

[19] => Array
(
[F] => #
[ID] => 24849
[REV] => 65050
[I4NEXT] => 24852
[S] => 0
[I4MS] => 65051
[MS] => 65050
[NAME] => testcal
[N] => 1
[RGB] => #000000
[L] => 1
[VIEW] => appointment
)

Does the "VIEW" structure stand for "Types" ? if yes....what did you use the same name both sides ??