getUnescoProperties() should be the best solution...
When possible just follow the pure camelCase, when you have acronyms just let them upper case when possible otherwise go camelCase.
Generally in OO programming variables should start with lower case letter (lowerCamelCase) and class should start with upper case letter (UpperCamelCase).
When in doubt just go pure camelCase ;)
parseXML is fine, parseXml is also camelCase
XMLHTTPRequest should be XmlHttpRequest or xmlHttpRequest no way to go with subsequent upper case acronyms, it is definitively not clear for all test cases.
e.g.
how do you read this word HTTPSSLRequest, HTTP + SSL, or HTTPS + SL (that doesn't mean anything but...), in that case follow camel case convention and go for httpSslRequest or httpsSlRequest, maybe it is no longer nice, but it is definitely more clear.