protected function validateTableAttributes(Table $table)
 {
     $reservedTableNames = array('table_name');
     $tableName = strtolower($table->getName());
     if (in_array($tableName, $reservedTableNames)) {
         $this->errors[] = sprintf('Table "%s" uses a reserved keyword as name', $table->getName());
     }
     if ($table->getIsCrossRef()) {
         $fkTables = array();
         foreach ($table->getForeignKeys() as $fk) {
             $foreignTableName = $fk->getForeignTableName();
             if (isset($fkTables[$foreignTableName])) {
                 $this->errors[] = sprintf('Table "%s" implements an equal nest relationship for table "%s". This feature is not supported', $table->getName(), $foreignTableName);
                 break;
             }
             $fkTables[$foreignTableName] = true;
         }
     }
 }