| @@ -202,7 +202,7 @@ | ||
| 202 | 202 | $stackDex = count($trackStack) - 1; | 
| 203 | 203 | assert( | 
| 204 | 204 | self::MAX_EXPAND_TREE_DEPTH > $stackDex, | 
| 205 | - 'Expansion stack too deep - should be less than '. self::MAX_EXPAND_TREE_DEPTH . 'elements' | |
| 205 | + 'Expansion stack too deep - should be less than ' . self::MAX_EXPAND_TREE_DEPTH . 'elements' | |
| 206 | 206 | ); | 
| 207 | 207 | $topNode = $trackStack[$stackDex]; | 
| 208 | 208 | /** @var ExpandedProjectionNode $rawNode */ |