[Annotation] @Mod11Check(threshold=, startIndex=, endIndex=, checkDigitIndex=, ignoreNonDigitCharacters=, treatCheck10As=, treatCheck11As=) [Supported data types] CharSequence [Hibernate metadata impact] None [Use] 
Checks that the digits within the annotated character sequence pass the mod 11 checksum algorithm. threshold specifies the threshold for the mod11 multiplier growth; if no value is specified the multiplier will grow indefinitely. treatCheck10As and treatCheck11As specify the check digits to be used when the mod 11 checksum equals 10 or 11, respectively. Default to X and 0, respectively. startIndex, endIndex checkDigitIndex and ignoreNonDigitCharacters carry the same semantics as in @Mod10Check.