public interface FreeRefFunction
ValueEval evaluate(ValueEval args, OperationEvaluationContext ec)
args- the pre-evaluated arguments for this function. args is never
null, nor are any of its elements.
ec- primarily used to identify the source cell containing the formula being evaluated. may also be used to dynamically create reference evals.
null. Possibly an instance of ErrorEval in the case of a specified Excel error (Exceptions are never thrown to represent Excel errors).
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