sample.go

	err = indexMapping.AddCustomTokenMap("myStopWords", map[string]interface{}{
		"tokens": []interface{}{"a", "in", "the"},
	})
	if err != nil {
		return nil, err
	}

	err = indexMapping.AddCustomTokenFilter("myStopFilter", map[string]interface{}{
		"type":           "stop_tokens",
		"stop_token_map": "stop_test",
	})
	if err != nil {
		return nil, err
	}

	err = indexMapping.AddCustomAnalyzer("myCustomAnalyzerWithStop",
		map[string]interface{}{
			"type":      custom.Name,
			"tokenizer": unicode.Name,
			"token_filters": []string{
				lowercase.Name,
				"myStopFilter",
			},
		})
	if err != nil {
		return nil, err
	}

	indexMapping.DefaultAnalyzer = "myCustomAnalyzerWithStop"