We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Replace `@$(...)` with `@$el.find(...)`
Unnecessary alias. Often people forget that `@$(...) != $(...)`.

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `sphinx/source/docs/user_guide/examples/extensions_putting_together.py`
Content:
```
1 from bokeh.core.properties import String, Instance
2 from bokeh.models import LayoutDOM, Slider
3 
4 CODE ="""
5 import * as _ from "underscore"
6 import * as $ from "jquery"
7 
8 import * as p from "core/properties"
9 import {LayoutDOM, LayoutDOMView} from "models/layouts/layout_dom"
10 
11 export class CustomView extends LayoutDOMView
12 
13   initialize: (options) ->
14     super(options)
15 
16     @render()
17 
18     # Set Backbone listener so that when the Bokeh slider has a change
19     # event, we can process the new data
20     @listenTo(@model.slider, 'change', () => @render())
21 
22   render: () ->
23     # Backbone Views create <div> elements by default, accessible as @$el.
24     # Many Bokeh views ignore this default <div>, and instead do things
25     # like draw to the HTML canvas. In this case though, we change the
26     # contents of the <div>, based on the current slider value.
27     @$el.html("<h1>#{ @model.text }: #{ @model.slider.value }</h1>")
28     @$('h1').css({ 'color': '#686d8e', 'background-color': '#2a3153' })
29 
30 export class Custom extends LayoutDOM
31 
32   # If there is an associated view, this is boilerplate.
33   default_view: CustomView
34 
35   # The ``type`` class attribute should generally match exactly the name
36   # of the corresponding Python class.
37   type: "Custom"
38 
39   # The @define block adds corresponding "properties" to the JS model. These
40   # should basically line up 1-1 with the Python model class. Most property
41   # types have counterparts, e.g. bokeh.core.properties.String will be
42   # p.String in the JS implementation. Where the JS type system is not yet
43   # as rich, you can use p.Any as a "wildcard" property type.
44   @define {
45     text:   [ p.String ]
46     slider: [ p.Any    ]
47   }
48 """
49 
50 class Custom(LayoutDOM):
51 
52     __implementation__ = CODE
53 
54     text = String(default="Custom text")
55 
56     slider = Instance(Slider)
57 
58 from bokeh.io import show
59 
60 from bokeh.layouts import column
61 from bokeh.models import Slider
62 
63 slider = Slider(start=0, end=10, step=0.1, value=0, title="value")
64 
65 custom = Custom(text="Special Slider Display", slider=slider)
66 
67 layout = column(slider, custom)
68 
69 show(layout)
70
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/sphinx/source/docs/user_guide/examples/extensions_putting_together.py b/sphinx/source/docs/user_guide/examples/extensions_putting_together.py
--- a/sphinx/source/docs/user_guide/examples/extensions_putting_together.py
+++ b/sphinx/source/docs/user_guide/examples/extensions_putting_together.py
@@ -25,7 +25,7 @@
     # like draw to the HTML canvas. In this case though, we change the
     # contents of the <div>, based on the current slider value.
     @$el.html("<h1>#{ @model.text }: #{ @model.slider.value }</h1>")
-    @$('h1').css({ 'color': '#686d8e', 'background-color': '#2a3153' })
+    @$el.find('h1').css({ 'color': '#686d8e', 'background-color': '#2a3153' })
 
 export class Custom extends LayoutDOM

{"golden_diff": "diff --git a/sphinx/source/docs/user_guide/examples/extensions_putting_together.py b/sphinx/source/docs/user_guide/examples/extensions_putting_together.py\n--- a/sphinx/source/docs/user_guide/examples/extensions_putting_together.py\n+++ b/sphinx/source/docs/user_guide/examples/extensions_putting_together.py\n@@ -25,7 +25,7 @@\n     # like draw to the HTML canvas. In this case though, we change the\n     # contents of the <div>, based on the current slider value.\n     @$el.html(\"<h1>#{ @model.text }: #{ @model.slider.value }</h1>\")\n-    @$('h1').css({ 'color': '#686d8e', 'background-color': '#2a3153' })\n+    @$el.find('h1').css({ 'color': '#686d8e', 'background-color': '#2a3153' })\n \n export class Custom extends LayoutDOM\n", "issue": "Replace `@$(...)` with `@$el.find(...)`\nUnnecessary alias. Often people forget that `@$(...) != $(...)`.\n", "before_files": [{"content": "from bokeh.core.properties import String, Instance\nfrom bokeh.models import LayoutDOM, Slider\n\nCODE =\"\"\"\nimport * as _ from \"underscore\"\nimport * as $ from \"jquery\"\n\nimport * as p from \"core/properties\"\nimport {LayoutDOM, LayoutDOMView} from \"models/layouts/layout_dom\"\n\nexport class CustomView extends LayoutDOMView\n\n  initialize: (options) ->\n    super(options)\n\n    @render()\n\n    # Set Backbone listener so that when the Bokeh slider has a change\n    # event, we can process the new data\n    @listenTo(@model.slider, 'change', () => @render())\n\n  render: () ->\n    # Backbone Views create <div> elements by default, accessible as @$el.\n    # Many Bokeh views ignore this default <div>, and instead do things\n    # like draw to the HTML canvas. In this case though, we change the\n    # contents of the <div>, based on the current slider value.\n    @$el.html(\"<h1>#{ @model.text }: #{ @model.slider.value }</h1>\")\n    @$('h1').css({ 'color': '#686d8e', 'background-color': '#2a3153' })\n\nexport class Custom extends LayoutDOM\n\n  # If there is an associated view, this is boilerplate.\n  default_view: CustomView\n\n  # The ``type`` class attribute should generally match exactly the name\n  # of the corresponding Python class.\n  type: \"Custom\"\n\n  # The @define block adds corresponding \"properties\" to the JS model. These\n  # should basically line up 1-1 with the Python model class. Most property\n  # types have counterparts, e.g. bokeh.core.properties.String will be\n  # p.String in the JS implementation. Where the JS type system is not yet\n  # as rich, you can use p.Any as a \"wildcard\" property type.\n  @define {\n    text:   [ p.String ]\n    slider: [ p.Any    ]\n  }\n\"\"\"\n\nclass Custom(LayoutDOM):\n\n    __implementation__ = CODE\n\n    text = String(default=\"Custom text\")\n\n    slider = Instance(Slider)\n\nfrom bokeh.io import show\n\nfrom bokeh.layouts import column\nfrom bokeh.models import Slider\n\nslider = Slider(start=0, end=10, step=0.1, value=0, title=\"value\")\n\ncustom = Custom(text=\"Special Slider Display\", slider=slider)\n\nlayout = column(slider, custom)\n\nshow(layout)\n", "path": "sphinx/source/docs/user_guide/examples/extensions_putting_together.py"}], "after_files": [{"content": "from bokeh.core.properties import String, Instance\nfrom bokeh.models import LayoutDOM, Slider\n\nCODE =\"\"\"\nimport * as _ from \"underscore\"\nimport * as $ from \"jquery\"\n\nimport * as p from \"core/properties\"\nimport {LayoutDOM, LayoutDOMView} from \"models/layouts/layout_dom\"\n\nexport class CustomView extends LayoutDOMView\n\n  initialize: (options) ->\n    super(options)\n\n    @render()\n\n    # Set Backbone listener so that when the Bokeh slider has a change\n    # event, we can process the new data\n    @listenTo(@model.slider, 'change', () => @render())\n\n  render: () ->\n    # Backbone Views create <div> elements by default, accessible as @$el.\n    # Many Bokeh views ignore this default <div>, and instead do things\n    # like draw to the HTML canvas. In this case though, we change the\n    # contents of the <div>, based on the current slider value.\n    @$el.html(\"<h1>#{ @model.text }: #{ @model.slider.value }</h1>\")\n    @$el.find('h1').css({ 'color': '#686d8e', 'background-color': '#2a3153' })\n\nexport class Custom extends LayoutDOM\n\n  # If there is an associated view, this is boilerplate.\n  default_view: CustomView\n\n  # The ``type`` class attribute should generally match exactly the name\n  # of the corresponding Python class.\n  type: \"Custom\"\n\n  # The @define block adds corresponding \"properties\" to the JS model. These\n  # should basically line up 1-1 with the Python model class. Most property\n  # types have counterparts, e.g. bokeh.core.properties.String will be\n  # p.String in the JS implementation. Where the JS type system is not yet\n  # as rich, you can use p.Any as a \"wildcard\" property type.\n  @define {\n    text:   [ p.String ]\n    slider: [ p.Any    ]\n  }\n\"\"\"\n\nclass Custom(LayoutDOM):\n\n    __implementation__ = CODE\n\n    text = String(default=\"Custom text\")\n\n    slider = Instance(Slider)\n\nfrom bokeh.io import show\n\nfrom bokeh.layouts import column\nfrom bokeh.models import Slider\n\nslider = Slider(start=0, end=10, step=0.1, value=0, title=\"value\")\n\ncustom = Custom(text=\"Special Slider Display\", slider=slider)\n\nlayout = column(slider, custom)\n\nshow(layout)\n", "path": "sphinx/source/docs/user_guide/examples/extensions_putting_together.py"}]}