There can be 0 or more maps
http://example.com:[port]/web2/secure/kartas/
Sample of response:
<kartas>
<karta>
<id>plan</id>
<name>This is plan of a building</name>
</karta>
<karta>
<id>site</id>
<name>This is site around the building</name>
</karta>
</kartas>