docs: func (c *Redshift) DescribeClusterDbRevisionsWithContext(ctx aws.Context, input *DescribeClusterDbRevisionsInput, opts ...request.Option) (*DescribeClusterDbRevisionsOutput, error) {
  	req, out := c.DescribeClusterDbRevisionsRequest(input)
  	req.SetContext(ctx)
  	req.ApplyOptions(opts...)
  	return out, req.Send()
  }