code: func (t *TableMap) SetVersionCol(field string) *ColumnMap {
  	c := t.ColMap(field)
  	t.version = c
  	t.ResetSql()
  	return c
  }
docs: // SetVersionCol sets the column to use as the Version field.  By default
  // the "Version" field is used.  Returns the column found, or panics
  // if the struct does not contain a field matching this name.
  //
  // Automatically calls ResetSql() to ensure SQL statements are regenerated.