l.ec.eccodes entries should be queried. Exiting
                   values in model.ec.eccodes will be wiped. Entries that
                   are indicated by false will be kept and not modified by
                   this function (optional, by default all model.ec.eccodes
                   entries are populated by this function)
   action          response action if multiple proteins with different EC
                   numbers are found for a given gene in a metabolic
                   reaction (optional