Group By
  Selected: {{ctrl.person.selected}}
  Grouped using a string group-by="'country'"
  
    {{$select.selected.name}}
    
      
      
        email: {{person.email}}
        age: 
      
    
    
  Grouped using a function group-by="ctrl.someGroupFn"
  
    {{$select.selected.name}}
    
      
      
        email: {{person.email}}
        age: 
      
    
    
  Regular
  
    {{$select.selected.name}}
    
      
      
        email: {{person.email}}
        age: