Fix Session::createDocumentFromSource implementation
Fix Session::createDocumentFromSource implementation

Summary:
The function `Session::createDocumentFromSource` was
not implemented correct.

Reviewers: #[t]_forgetit-dev, dkd-ebert

Reviewed By: #[t]_forgetit-dev, dkd-ebert

Differential Revision: https://phabricator.dkd.de/D1258

dkd/php-cmis-client