`allocator` is the first argument of `String.concat()` but is labeled as the third in the suggestion overlay. <img width="634" height="248" alt="Image" src="https://github.com/user-attachments/assets/be5da4a2-0142-4275-83d6-de51254e7783" /> Also, the suggestion overlay doesn't keep track of the current parameter index (text in blue) but always displays the first one. <img width="690" height="242" alt="Image" src="https://github.com/user-attachments/assets/dc3418f3-ac34-4065-9826-78f5988ac8a4" />
allocatoris the first argument ofString.concat()but is labeled as the third in the suggestion overlay.Also, the suggestion overlay doesn't keep track of the current parameter index (text in blue) but always displays the first one.
