def add_to_query(**terms)
      if is_a? Rescuetime::Collection
        self << terms
        self
      else
        Rescuetime::Collection.new(BASE_PARAMS, state, terms)
      end
    end
def add_to_query(**terms)
      if is_a? Rescuetime::Collection
        self << terms
        self
      else
        Rescuetime::Collection.new(BASE_PARAMS, state, terms)
      end
    end
Adds terms to the Rescuetime collection query

 @param  [Hash] terms             a set of terms to add to the query
 @return [Rescuetime::Collection]