Return information about individuals
        
            Args:
                ind_ids (list(str)): List of individual ids
            
            Returns:
                individuals (Iterable): Iterable with Individuals

def individuals(self, ind_ids=None):
        """Return information about individuals
        
            Args:
                ind_ids (list(str)): List of individual ids
            
            Returns:
                individuals (Iterable): Iterable with Individuals
        """
        if ind_ids:
            for ind_id in ind_ids:
                for ind in self.individual_objs:
                    if ind.ind_id == ind_id:
                        yield ind
        else:
            for ind in self.individual_objs:
                yield ind