default.tmpl

{{.CommonAnnotations}}
{{.CommonLabels}}
{{.ExternalURL}}
{{.GroupLabels}}
{{.Receiver}}
{{.Status}}

<b>Active Alert List:</b>
{{ range $val := .Alerts -}}
  {{$val}}
{{ end}}
Version:{{.Version}}

{{/*Possible variable of template
  	Alerts            []Alert
  	CommonAnnotations map[string]interface{}
  	CommonLabels      map[string]interface{}
  	ExternalURL       string
  	GroupKey          int
  	GroupLabels       map[string]interface{}
  	Receiver          string
  	Status            string
  	Version

    SubVariable Alert use make test for testing this

  	Annotations  map[string]interface{}
  	EndsAt       string
  	GeneratorURL string                 `
  	Labels       map[string]interface{}
  	StartsAt     string

    All MAP params are iterable with range.
    About go template language take look:https://golang.org/pkg/text/template/

  */}}