75 …         fn($row) => $this->unescapePipes($this->trimCellEdges($this->padOrTruncate($row, $cols))),
133      * @param array $row a row as a list of cells; each cell is a list of
138     protected function stripBoundaryEmpty(array $row): array  argument
140         if ($row && $row[0] === []) array_shift($row);
141         if ($row && end($row) === []) array_pop($row);
142         return $row;
197      * @param array $row a body row as a list of cells
201     protected function padOrTruncate(array $row, int $cols): array  argument
203         $count = count($row);
205             return array_pad($row, $cols, []);
208             return array_slice($row, 0, $cols);
210         return $row;
218      * @param array $row a row as a list of cells
221     protected function trimCellEdges(array $row): array  argument
223         return array_map($this->trimCell(...), $row);
264      * @param array $row a row as a list of cells
267     protected function unescapePipes(array $row): array  argument
269         foreach ($row as &$cell) {
276         return $row;
292         foreach ($rows as $row) {
294             foreach ($row as $cell) {
346             foreach ($bodyRows as $row) {
348                 foreach ($row as $i => $cell) {