Java Suggestion Details doesn't work right sometimes.

[JoeyRxy]

Environment

• Operating System: Win10 x64
• JDK version: JDK13 or 11
• Visual Studio Code version: 1.41.1
• Java extension version: 0.55.1

Steps To Reproduce

I don't know whether other methods' suggestion detail is wrong, I found this bug just now in LinkedList.

1. [step 1] make a instance list of LinkedList
2. [step 2] type list.add. While you typing, suggestions pop up (or you can press Ctrl+Space). There should be details about method add which is generated from the method's JavaDoc, but there's not.

The ScreenShots

As we can see, details of method addAll works well, but there's no details about add. (As we know, add method in LinkedList does have a JavaDoc)

Current Result

add method in LinkedList does not have suggestion details

Expected Result

add method should have details. AND MORE IMPORTANT, perhaps there's a bug about suggestion details for JavaDoc.

[JoeyRxy]

The Screenshots :

[JoeyRxy]

Hi? Does anyone notice this bug? I think we should attach importance to this bug of a primary function.

[anthonyvdotbe]

Another example:

[fbricon]

I can reproduce the issue with OpenJDK 13.0.1, both for List.add and Map.of().compute.

I can see completionItem/resolve doesn't return the javadoc for the List.add methods, but it works for List.addAll This is really, really weird.

[Trace - 10:31:04 AM] Received response 'textDocument/completion - (768)' in 12ms.
Result: {
    "isIncomplete": false,
    "items": [
        {
            "label": "add(int index, Object element) : void",
            "kind": 2,
            "detail": "List.add(int index, Object element) : void",
            "sortText": "999998971",
            "insertText": "add",
            "insertTextFormat": 2,
            "textEdit": {
                "range": {
                    "start": {
                        "line": 15,
                        "character": 7
                    },
                    "end": {
                        "line": 15,
                        "character": 10
                    }
                },
                "newText": "add(${1:index}, ${2:element});"
            },
            "data": {
                "decl_signature": "Ljava.util.List<Ljava.lang.Object;>;",
                "signature": "(ILjava.lang.Object;)V",
                "name": "add",
                "pid": "0",
                "rid": "30",
                "uri": "file:///Users/fbricon/Dev/souk/standalones/max/src/foo/bar/Demo.java"
            }
        },
        {
            "label": "add(Object e) : boolean",
            "kind": 2,
            "detail": "List.add(Object e) : boolean",
            "sortText": "999998971",
            "insertText": "add",
            "insertTextFormat": 2,
            "textEdit": {
                "range": {
                    "start": {
                        "line": 15,
                        "character": 7
                    },
                    "end": {
                        "line": 15,
                        "character": 10
                    }
                },
                "newText": "add(${1:e})"
            },
            "data": {
                "decl_signature": "Ljava.util.List<Ljava.lang.Object;>;",
                "signature": "(Ljava.lang.Object;)Z",
                "name": "add",
                "pid": "1",
                "rid": "30",
                "uri": "file:///Users/fbricon/Dev/souk/standalones/max/src/foo/bar/Demo.java"
            }
        },
        {
            "label": "addAll(int index, Collection<? extends Object> c) : boolean",
            "kind": 2,
            "detail": "List.addAll(int index, Collection<? extends Object> c) : boolean",
            "sortText": "999999035",
            "insertText": "addAll",
            "insertTextFormat": 2,
            "textEdit": {
                "range": {
                    "start": {
                        "line": 15,
                        "character": 7
                    },
                    "end": {
                        "line": 15,
                        "character": 10
                    }
                },
                "newText": "addAll(${1:index}, ${2:c})"
            },
            "data": {
                "decl_signature": "Ljava.util.List<Ljava.lang.Object;>;",
                "signature": "(ILjava.util.Collection<+Ljava.lang.Object;>;)Z",
                "name": "addAll",
                "pid": "2",
                "rid": "30",
                "uri": "file:///Users/fbricon/Dev/souk/standalones/max/src/foo/bar/Demo.java"
            }
        },
        {
            "label": "addAll(Collection<? extends Object> c) : boolean",
            "kind": 2,
            "detail": "List.addAll(Collection<? extends Object> c) : boolean",
            "sortText": "999999035",
            "insertText": "addAll",
            "insertTextFormat": 2,
            "textEdit": {
                "range": {
                    "start": {
                        "line": 15,
                        "character": 7
                    },
                    "end": {
                        "line": 15,
                        "character": 10
                    }
                },
                "newText": "addAll(${1:c})"
            },
            "data": {
                "decl_signature": "Ljava.util.List<Ljava.lang.Object;>;",
                "signature": "(Ljava.util.Collection<+Ljava.lang.Object;>;)Z",
                "name": "addAll",
                "pid": "3",
                "rid": "30",
                "uri": "file:///Users/fbricon/Dev/souk/standalones/max/src/foo/bar/Demo.java"
            }
        }
    ]
}


[Trace - 10:31:04 AM] Sending request 'completionItem/resolve - (769)'.
Params: {
    "label": "add(Object e) : boolean",
    "detail": "List.add(Object e) : boolean",
    "insertTextFormat": 2,
    "textEdit": {
        "newText": "add(${1:e})",
        "range": {
            "start": {
                "line": 15,
                "character": 7
            },
            "end": {
                "line": 15,
                "character": 10
            }
        }
    },
    "kind": 2,
    "sortText": "999998971",
    "data": {
        "decl_signature": "Ljava.util.List<Ljava.lang.Object;>;",
        "signature": "(Ljava.lang.Object;)Z",
        "name": "add",
        "pid": "1",
        "rid": "30",
        "uri": "file:///Users/fbricon/Dev/souk/standalones/max/src/foo/bar/Demo.java"
    }
}


[Trace - 10:31:04 AM] Received response 'completionItem/resolve - (769)' in 8ms.
Result: {
    "label": "add(Object e) : boolean",
    "kind": 2,
    "detail": "List.add(Object e) : boolean",
    "sortText": "999998971",
    "insertTextFormat": 2,
    "textEdit": {
        "range": {
            "start": {
                "line": 15,
                "character": 7
            },
            "end": {
                "line": 15,
                "character": 10
            }
        },
        "newText": "add(${1:e})"
    }
}