Gets or sets the maximum length of the string representation of the attribute value
when used in RxPaths. If the length of the string representation of the attribute value
is greater than this value, the string representation is truncated and converted to
a regular expression.
The maximum length of the string representation of the attribute value when
used in RxPaths. Default is int.MaxValue, i.e. by default truncating is disabled.
If you set this value to -1, the MaxMatchTextLen will
be used as truncation length for this attribute.
