ZF-8017: Zend_Service_Twitter_Search should not extend Zend_Http_Client
Currently Zend_Service_Twitter_Search extends Zend_Http_Client, this is bad because :
a) Zend_Service_Twitter_Search is NOT a Zend_Http_Client - it merely uses one (hence an architecture issue)
b) It does not make it possible for a mock Zend_Http_Client to be introduced to perform tests
c) It does not make it possible to use a subclass of Zend_Http_Client - which may have e.g. local site specific proxy / caching settings.