[TASK] Additional helper methods in Tx_Restdoc_Reader_SphinxJson

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/restdoc/trunk@75398 735d13b6-9817-0410-8766-e36946ffe9aa
[BUGFIX] Invalid return type in PHPdoc

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/restdoc/trunk@75401 735d13b6-9817-0410-8766-e36946ffe9aa