code: func (s *bulkInsertStmt) CheckNamedValue(nv *driver.NamedValue) error {
  	return checkNamedValue(s.prmFieldSet, nv)
  }
docs: // Deprecated: see NamedValueChecker.
  //func (s *bulkInsertStmt) ColumnConverter(idx int) driver.ValueConverter {
  //}
  // CheckNamedValue implements NamedValueChecker interface.