The following example:

import java.dyn.*;

class Test {

void test(MethodHandle mh) throws Throwable {
   String s = mh.<String>invokeExact("daddy",'d','n'); //this works but gets warning to use new syntax
   s = (String)mh.invokeExact("bunny",'n','d'); //this throws exception
}
}

produces a classfile that uses two separate constant pool method entries for encoding the signatures of the PS methods.