Performs the Search Methods: Search Residential Property, Search Residential Rental Property, Residential Open Homes, Search Commercial Property, Search Commercial Lease Property, Search Rural Property, Search Lifestyle Property, Search Retirement Villages,
using the "query" string provided - should be the "Search/Property/Retirement.xml" part of the url. It shouldn't include "http://api.trademe.co.nz/v1/".
DOES NOT REQUIRE AUTHENTICATION.