Checks whether the supplied Throwable is an instance of
InvocationTargetException and returns the throwable that is
wrapped by it, if there is any.
t - the Throwable to check
t or t.getCause()
public static void preload()
NO-OP method provided to enable simple pre-loading of this class. Since
the class is used extensively in error handling, it is prudent to
pre-load it to avoid any failure to load this class masking the true
problem during error handling.