Function HTTPClient.getResponseHeadersAsDictionary
Returns all response headers as a Dictionary of structure { "key": "value1; value2" }
where the case-sensitivity of the keys and values is kept like the server delivers it. A value is a simple String, this string can have more than one value where "; " is used as separator.
Example:
{ "content-length": 12, "Content-Type": "application/json; charset=UTF-8", }