docs: def drop_columns(self, colnames, **kwargs):
          """Drop  columns from the table.
  
          See the docs for ``numpy.lib.recfunctions.drop_fields`` for an
          explanation of the remaining options.
          """
          new_arr = rfn.drop_fields(
              self, colnames, usemask=False, asrecarray=True, **kwargs
          )
          return self.__class__(
              new_arr,
              h5loc=self.h5loc,
              split_h5=self.split_h5,
              name=self.name,
              h5singleton=self.h5singleton
          )