Incomplete decorator cannot be put after a metadata decorator

If the Incomplete decorator is at the end of the execution chain
```python
    @incomplete
    @metadata(category='positive')
    def can_retrieve(self):
        pass
```
It results in output like: 
```
    --snip--
    ∟ DECORATOR ONCALL
    --snip--
```

When It really should look like:
```
    --snip--
    ∟ can retrieve (incomplete)
    --snip--
```