def METHOD_NAME(salary_slips):
	emp_names = [d.employee for d in salary_slips]
	ifsc_codes = get_all("Employee", [("name", "IN", emp_names)], ["ifsc_code", "name"])
	ifsc_codes_map = {}
	for code in ifsc_codes:
		ifsc_codes_map[code.name] = code
	for slip in salary_slips:
		slip["ifsc_code"] = ifsc_codes_map[code.name]["ifsc_code"]
	return salary_slips