ComputationAction1 will print the result of the compuration made by
children elements but only if the compuration itself is named, that is if the
name attribute of the associated computation element is not null.
ComputationAction2 will print the result of the compuration made by
children elements but only if the computation itself is named, that is if the
name attribute of the associated computation element is not null.
This action converts the value attribute of the associated element to an
integer and pushes the resulting Integer object on top of the execution
context stack.