code: func (c *RDS) WaitUntilDBSnapshotAvailable(input *DescribeDBSnapshotsInput) error {
  	return c.WaitUntilDBSnapshotAvailableWithContext(aws.BackgroundContext(), input)
  }
docs: // WaitUntilDBSnapshotAvailable uses the Amazon RDS API operation
  // DescribeDBSnapshots to wait for a condition to be met before returning.
  // If the condition is not met within the max attempt window, an error will
  // be returned.