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