Method calls via selector operator (->) do not correctly use implicit first parameter in completion/reference checking

[GoNZooo]

The following code is a method on a ^d3d12.IDevice (from the vendor:directx/d3d12 package):

GetDescriptorHandleIncrementSize :: proc "system" (this: ^IDevice, DescriptorHeapType: DESCRIPTOR_HEAP_TYPE) -> u32

When using this with the selector operator in the editor completion will not give correct suggestions based on the parameter being passed in, because it thinks we are currently filling in the pointer to the device, when in fact we are filling in the second parameter (the pointer is passed implicitly):

descriptor_size := device->GetDescriptorHandleIncrementSize(.RTV)

The .RTV value here is recognized incorrectly as an unknown reference because the plugin does not realize that we are filling in the DESCRIPTOR_HEAP_TYPE parameter:

If we pass nil as a "first" argument the plugin has now caught up and will actually also give correct completion for the parameter:

Completion: