def location=(loc)
      unless loc.is_a?(EEML::Location)
        raise TypeError.new('loc must be an EEML::Location') 
      end
      @location = loc
    end
def location=(loc)
      unless loc.is_a?(EEML::Location)
        raise TypeError.new('loc must be an EEML::Location') 
      end
      @location = loc
    end
Set the location of the feed - loc must be an EEML::Location object