Property setting through ognl shouldn't use Arrays.asList()

A HttpServletRequest has the URI keywords as keys, and String[] as values. I don't understand the intention of setPropertiesWithOgnl():

Object value = parameterMap.get(parameterKey);
if (value instanceof String[])

{ value = Arrays.asList((String[]) value); }

try

{ Ognl.setValue(parameterKey, action, value); }

catch (OgnlException e)

{ e.printStackTrace(); throw new ServletException(e); }

Why convert to Arrays.asList()? I did a test with Ognl standalone. It can match String[] as input, for a String[] property. With the current code, it will yield:

java.lang.NoSuchMethodException: setNumber(java.util.Arrays$ArrayList)
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:551)
...

Where it doesn't match the internal ArrayList used by Arrays.asList().