Calling MethodHandle#invoke from Kotlin

Java has a class called MethodHandle which represents a dynamic but strongly typed operation. It provides invoke and invokeExact methods that are "signature polymorphic" and handled specially: rather than treating their invocations as the use of a normal varargs method, the compiler emits bytecode involving the invokedynamic instruction.

Since calls to these methods require compiler support, other JVM language compilers may not handle them properly. Kotlin 1.3.x doesn't generate the special bytecode by default and therefore cannot call signature-polymorphic methods correctly. However, the correct behavior can be enabled with the -XXLanguage:+PolymorphicSignature argument to the compiler. Alternatively, the similar invokeWithArguments method can be called normally, but may be a little slower due to the extra work of transforming the normal varargs call into a dynamic invocation.