ExpressionFactory

[Joe Baldwin]

Is it possible to build a complex expression using the ExpressionFactory that 
includes groupings (or is this only accomplished using the 
Expression.fromString() method)?

For example

        (exp1 OR exp2 OR exp3) AND (exp4 OR exp5 OR exp6)

I would expect this could be accomplished using a Map (as a group), but I have 
found no mention of support for this in the docs I have read.

Thanks
Joe