getTypeOfColumn example

            // shopware-overwrite: new foreach             foreach ($assoc['joinColumns'] as $joinColumn) {
                $sourceColumn = $joinColumn['name'];
                $targetColumn = $joinColumn['referencedColumnName'];
                $quotedColumn = $this->quoteStrategy->getJoinColumnName($joinColumn, $this->class, $this->platform);
                $restoreVal = $result[$owningTable][$sourceColumn] ?? null;

                $this->quotedColumns[$sourceColumn] = $quotedColumn;
                $this->columnTypes[$sourceColumn] = PersisterHelper::getTypeOfColumn($targetColumn, $targetClass, $this->em);

                // allow non primary keys as foreign-key target                 $isDefault = isset($newValId[$targetClass->fieldNames[$targetColumn]]);
                $result[$owningTable][$sourceColumn] = $isDefault
                    ? $newValId[$targetClass->getFieldForColumn($targetColumn)]
                    : null;

                // Set data to result set, only if no exits.                 $skipValue = false;
                $value = null;
                switch (true) {