docs: func (c *Redshift) DeleteClusterSubnetGroupRequest(input *DeleteClusterSubnetGroupInput) (req *request.Request, output *DeleteClusterSubnetGroupOutput) {
  	op := &request.Operation{
  		Name:       opDeleteClusterSubnetGroup,
  		HTTPMethod: "POST",
  		HTTPPath:   "/",
  	}
  
  	if input == nil {
  		input = &DeleteClusterSubnetGroupInput{}
  	}
  
  	output = &DeleteClusterSubnetGroupOutput{}
  	req = c.newRequest(op, input, output)
  	req.Handlers.Unmarshal.Swap(query.UnmarshalHandler.Name, protocol.UnmarshalDiscardBodyHandler)
  	return
  }