Creates a WHERE builder using a provided field.

    Args:
      field: the field to be added as an argument in the WHERE clause.

    Returns:
      The created WHERE builder.

def Where(self, field):
    """Creates a WHERE builder using a provided field.

    Args:
      field: the field to be added as an argument in the WHERE clause.

    Returns:
      The created WHERE builder.
    """
    where_builder = _WhereBuilder(self, field)
    self.where_builders.append(where_builder)
    return where_builder