@@ -119,7 +119,10 @@ public function walkEntityIdentificationVariable(string $identVariable): string
119119 return $ this ->callWalkers (SqlNode::EntityIdentificationVariable, parent ::walkEntityIdentificationVariable ($ identVariable ));
120120 }
121121
122- public function walkIdentificationVariable (string $ identificationVariable , string |null $ fieldName = null ): string
122+ public function walkIdentificationVariable (
123+ string $ identificationVariable ,
124+ ?string $ fieldName = null ,
125+ ): string
123126 {
124127 return $ this ->callWalkers (SqlNode::IdentificationVariable, parent ::walkIdentificationVariable ($ identificationVariable , $ fieldName ));
125128 }
@@ -233,7 +236,10 @@ public function walkParenthesisExpression(ParenthesisExpression $parenthesisExpr
233236 return $ this ->callWalkers (SqlNode::ParenthesisExpression, parent ::walkParenthesisExpression ($ parenthesisExpression ));
234237 }
235238
236- public function walkNewObject (NewObjectExpression $ newObjectExpression , string |null $ newObjectResultAlias = null ): string
239+ public function walkNewObject (
240+ NewObjectExpression $ newObjectExpression ,
241+ ?string $ newObjectResultAlias = null ,
242+ ): string
237243 {
238244 return $ this ->callWalkers (SqlNode::NewObject, parent ::walkNewObject ($ newObjectExpression , $ newObjectResultAlias ));
239245 }
@@ -273,7 +279,7 @@ public function walkUpdateItem(UpdateItem $updateItem): string
273279 return $ this ->callWalkers (SqlNode::UpdateItem, parent ::walkUpdateItem ($ updateItem ));
274280 }
275281
276- public function walkWhereClause (WhereClause | null $ whereClause ): string
282+ public function walkWhereClause (? WhereClause $ whereClause ): string
277283 {
278284 return $ this ->callWalkers (SqlNode::WhereClause, parent ::walkWhereClause ($ whereClause ));
279285 }
@@ -403,7 +409,10 @@ public function walkResultVariable(string $resultVariable): string
403409 return $ this ->callWalkers (SqlNode::ResultVariable, parent ::walkResultVariable ($ resultVariable ));
404410 }
405411
406- private function callWalkers (SqlNode $ sqlNode , string $ sql ): string
412+ private function callWalkers (
413+ SqlNode $ sqlNode ,
414+ string $ sql ,
415+ ): string
407416 {
408417 foreach ($ this ->stringSqlWalkers [$ sqlNode ->value ] ?? [] as $ stringSqlWalker ) {
409418 $ sql = $ stringSqlWalker ->processNode ($ sqlNode , $ sql );
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