code: def big_integer(self, column, auto_increment=False, unsigned=False):
          
          return self._add_column('big_integer', column,
                                  auto_increment=auto_increment,
                                  unsigned=unsigned)
docs: Create a new big integer column on the table.
  
          :param column: The column
          :type column: str
  
          :type auto_increment: bool
  
          :type unsigned: bool
  
          :rtype: Fluent