Set multiple attributes' values for this subject in one operation.

    Args:
      subject: The subject this applies to.
      values: A dict with keys containing attributes and values, serializations
        to be set. values can be a tuple of (value, timestamp). Value must be
        one of the supported types.
      timestamp: The timestamp for this entry in microseconds since the epoch.
        None means now.
      replace: Bool whether or not to overwrite current records.
      sync: If true we block until the operation completes.
      to_delete: An array of attributes to clear prior to setting.

def MultiSet(self,
               subject,
               values,
               timestamp=None,
               replace=True,
               sync=True,
               to_delete=None):
    """Set multiple attributes' values for this subject in one operation.

    Args:
      subject: The subject this applies to.
      values: A dict with keys containing attributes and values, serializations
        to be set. values can be a tuple of (value, timestamp). Value must be
        one of the supported types.
      timestamp: The timestamp for this entry in microseconds since the epoch.
        None means now.
      replace: Bool whether or not to overwrite current records.
      sync: If true we block until the operation completes.
      to_delete: An array of attributes to clear prior to setting.
    """