code: function getPluralCategory(value, cases, ngLocalization) {
  	        var nbCase = "=" + value;
  	        return cases.indexOf(nbCase) > -1 ? nbCase : ngLocalization.getPluralCategory(value);
  	    }
docs: Returns the plural category for a given value.
  - "=value" when the case exists,
  - the plural category otherwise
  
  @internal