Evaluate the function with the specified arguments.
To the greatest extent possible, side-effects should be avoided in the definition of extension functions. The implementation evaluating an XPath expression is under no obligation to call extension functions in any particular order or any particular number of times.
@param args The arguments,
null
is a valid value.
@return The result of evaluating the
XPath
function as an
Object
.
@throws XPathFunctionException If
args
cannot be evaluated with this
XPath
function.