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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def json_schema_validation_format(value, schema_validation_type):
 """ adds iso8601 to the datetimevalidator raises SchemaError if validation fails """

    DEFAULT_FORMAT_VALIDATORS['date-time'] = validate_format_iso8601
    DEFAULT_FORMAT_VALIDATORS['text'] = validate_format_text
    validictory.validate(value, schema_validation_type, format_validators=DEFAULT_FORMAT_VALIDATORS)