Sometimes MethodHandles.asSpreader() reports:
 
java.lang.UnsupportedOperationException: NYI
at java.lang.invoke.SpreadGeneric.buildAdapterFromBytecodes(SpreadGeneric.java:199)
    at java.lang.invoke.SpreadGeneric.<init>(SpreadGeneric.java:65)
    at java.lang.invoke.SpreadGeneric.of(SpreadGeneric.java:121)
    at java.lang.invoke.SpreadGeneric.make(SpreadGeneric.java:100)
    at java.lang.invoke.MethodHandleImpl.spreadArguments(MethodHandleImpl.java:723)
    at java.lang.invoke.MethodHandles.spreadArguments(MethodHandles.java:1563)
    at java.lang.invoke.MethodHandle.asSpreader(MethodHandle.java:740)