[ [Functions::class, 'null'], ExcelError::null(), ], 'NAN' => [ [Functions::class, 'NAN'], ExcelError::NAN(), ], 'NA' => [ [Functions::class, 'NA'], ExcelError::NA(), ], 'NAME' => [ [Functions::class, 'NAME'], ExcelError::NAME(), ], 'REF' => [ [Functions::class, 'REF'], ExcelError::REF(), ], 'VALUE' => [ [Functions::class, 'VALUE'], ExcelError::VALUE(), ], 'DIV0' => [ [Functions::class, 'DIV0'], ExcelError::DIV0(), ], ]; } }