#2 Exception messages in generated text must be more meaningful

[Anonymous]

Exception messages in generated text must be more
meaningful.
For example, when nonoptional list have zero length
the following exception is thrown: new
IllegalArgumentException( "<name of list>" ).

[all-x]

Logged In: YES
user_id=1130931

Text messages in exceptions are not customizable (for
example, for localization) and don't allow to extract additional
info about a cause of exception. So, I propose to have
exception class inherited from IllegalArgumentException with
fields for object, attribute name and other useful info.
Such class provide default format of text message that can
be customized.