What is the simplest way to get a variable's type as declared in a script, when the variable is received by a system function declared to take any input?

For example, given the following function declaration:

void Function(?& in)

How would i determine what type is passed in?

If i were to pass in this:

array<dictionary@>@ pArray = array<dictionary@>();

I want to get that declaration, including namespace if present. Whatever method would be used would have to take into account whether the input is a primitive type, reference or value type, enum, handle, or funcdef.

I know it's possible to get the information needed to form the declaration for all except funcdefs, which seem to be inaccessible on a module level. Only system declared funcdefs are available for iteration through the engine, as far as i know.

That works for funcdefs, but arrays are given as "::::dictionary@[]". Unless GetFunctionByDecl supports this syntax i can't use it.

EDIT:

As i feared, GetFunctionByDecl doesn't support the array syntax. Is there an easy way to convert it to the common template format?

EDIT2:

Ok, by setting the engine property asEP_EXPAND_DEF_ARRAY_TO_TMPL it returns a template declaration, which works. Problem solved.