Avoid raising an exception if we can't resolve a variable. Instead, return a null expression.  This speeds up the resolution and creation of Ada bean in ASF framework (cost of exception is high compared to this).
Avoid raising an exception if we can't resolve a variable.
Instead, return a null expression.  This speeds up the resolution and
creation of Ada bean in ASF framework (cost of exception is high
compared to this).

Letractively/ada-el