code: def _add_column(self, type, name, **parameters):
          
          parameters.update({
              'type': type,
              'name': name
          })
  
          column = Fluent(**parameters)
          self._columns.append(column)
  
          return column
docs: Add a new column to the blueprint.
  
          :param type: The column type
          :type type: str
  
          :param name: The column name
          :type name: str
  
          :param parameters: The column parameters
          :type parameters: dict
  
          :rtype: Fluent