How to use the fastavro.validation.validate_many function in fastavro

def validation_boolean(schema, *records):
    return validate_many(records, schema, raise_errors=False)

def validation_raise(schema, *records):
    return validate_many(records, schema, raise_errors=True)

def validater(schema, records, runs=1):
    times = []
    valid = []
    schema = parse_schema(schema)
    for _ in range(runs):
        start = time.time()
        valid = validate_many(records, schema)
        end = time.time()
        times.append(end - start)
    print('... {0} runs averaged {1} seconds'.format(runs, (sum(times) / runs)))
    return valid