var {{ stub_var }} = LINKER.upcallStub(LOOKUP.bind(this, "{{ handle }}",
MethodType.methodType({{ method_return_type }}{{ extra_param }})),
FunctionDescriptor.of({{ descriptor_return }}{{ extra_descriptor }}),
Arena.global());
vtable.set(ValueLayout.ADDRESS, offset, {{ stub_var }});
offset += ValueLayout.ADDRESS.byteSize();