func (s *CatAliasesService) Pretty(pretty bool) *CatAliasesService {
	s.pretty = pretty
	return s
}
Pretty indicates that the JSON response be indented and human readable.
package elastic
import (
	"context"
	"fmt"
	"net/url"
	"strings"
	"github.com/olivere/elastic/uritemplates"
)
type CatAliasesService struct {
	client        *Client
	pretty        bool
	local         *bool
	masterTimeout string
	aliases       []string
	columns       []string
	sort          []string  
}
func NewCatAliasesService(client *Client) *CatAliasesService {
	return &CatAliasesService{
		client: client,
	}
}
func (s *CatAliasesService) Alias(alias ...string) *CatAliasesService {
	s.aliases = alias
	return s
}
func (s *CatAliasesService) Local(local bool) *CatAliasesService {
	s.local = &local
	return s
}
func (s *CatAliasesService) MasterTimeout(masterTimeout string) *CatAliasesService {
	s.masterTimeout = masterTimeout
	return s
}
func (s *CatAliasesService) Columns(columns ...string) *CatAliasesService {
	s.columns = columns
	return s
}
func (s *CatAliasesService) Sort(fields ...string) *CatAliasesService {
	s.sort = fields
	return s
}