protected function generateNullable($column, $changeMode, $columnData, $forceFlagsChange)
{
$result = null;
if (!$changeMode) {
if (!$column->getNotnull()) {
$result = $this->generateBooleanMethod('nullable', true);
}
} elseif (in_array('notnull', $columnData->changedProperties) || $forceFlagsChange) {
$result = $this->generateBooleanMethod('nullable', !$column->getNotnull());
}
return $result;
}