We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
New Sphinx Theme
The idea is to get a new and shiny theme that makes Flax's RTD page standout a little more. 

I've gathered a couple of options:

### [JAX's Theme](https://jax.readthedocs.io/en/latest/)
![Screenshot from 2022-05-25 13-16-27](https://user-images.githubusercontent.com/5862228/170337666-3fdac1a8-d6c6-45ad-805e-8c3723c487a3.png)
### [Pydata Sphinx Theme](https://pydata-sphinx-theme.readthedocs.io/en/latest/user_guide/index.html)
![Screenshot from 2022-05-25 13-17-39](https://user-images.githubusercontent.com/5862228/170337899-f9ae6ecf-5681-4a32-b5e6-4b56f4f83be6.png)
### [Furo](https://pradyunsg.me/furo/quickstart/)
![Screenshot from 2022-05-25 13-19-51](https://user-images.githubusercontent.com/5862228/170338218-ca637285-bf1b-4fc2-8637-a18b8c922ad5.png)


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `docs/conf.py`
Content:
```
1 # Copyright 2022 The Flax Authors.
2 #
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
6 #
7 #     http://www.apache.org/licenses/LICENSE-2.0
8 #
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
14 
15 """Configuration file for the Sphinx documentation builder."""
16 
17 
18 # This file only contains a selection of the most common options. For a full
19 # list see the documentation:
20 # https://www.sphinx-doc.org/en/master/usage/configuration.html
21 
22 # -- Path setup --------------------------------------------------------------
23 
24 # If extensions (or modules to document with autodoc) are in another directory,
25 # add these directories to sys.path here. If the directory is relative to the
26 # documentation root, use os.path.abspath to make it absolute, like shown here.
27 #
28 # import os
29 # import sys
30 # sys.path.insert(0, os.path.abspath('.'))
31 
32 import os
33 import sys
34 sys.path.insert(0, os.path.abspath('..'))
35 # Include local extension.
36 sys.path.append(os.path.abspath('./_ext'))
37 
38 # -- Project information -----------------------------------------------------
39 
40 project = 'Flax'
41 copyright = '2020, The Flax authors'  # pylint: disable=redefined-builtin
42 author = 'The Flax authors'
43 
44 
45 # -- General configuration ---------------------------------------------------
46 
47 # Add any Sphinx extension module names here, as strings. They can be
48 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
49 # ones.
50 extensions = [
51     'sphinx.ext.autodoc',
52     'sphinx.ext.autosummary',
53     'sphinx.ext.autosectionlabel',
54     'sphinx.ext.doctest',
55     'sphinx.ext.intersphinx',
56     'sphinx.ext.mathjax',
57     'sphinx.ext.napoleon',
58     'sphinx.ext.viewcode',
59     'nbsphinx',
60     'recommonmark',
61     'codediff',
62     'sphinx_markdown_tables'
63 ]
64 
65 # Add any paths that contain templates here, relative to this directory.
66 templates_path = ['_templates']
67 
68 # List of patterns, relative to source directory, that match files and
69 # directories to ignore when looking for source files.
70 # This pattern also affects html_static_path and html_extra_path.
71 exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
72 
73 source_suffix = ['.rst', '.md']
74 
75 autosummary_generate = True
76 
77 master_doc = 'index'
78 
79 autodoc_typehints = 'description'
80 
81 
82 # -- Options for HTML output -------------------------------------------------
83 
84 # The theme to use for HTML and HTML Help pages.  See the documentation for
85 # a list of builtin themes.
86 #
87 html_theme = 'sphinx_rtd_theme'
88 html_style = 'css/flax_theme.css'
89 
90 # The name of an image file (relative to this directory) to place at the top
91 # of the sidebar.
92 html_logo = './flax.png'
93 
94 # Add any paths that contain custom static files (such as style sheets) here,
95 # relative to this directory. They are copied after the builtin static files,
96 # so a file named "default.css" will overwrite the builtin "default.css".
97 html_static_path = ['_static']
98 
99 nbsphinx_codecell_lexer = 'ipython3'
100 
101 nbsphinx_prolog = r"""
102 {% set docname = 'docs/' + env.doc2path(env.docname, base=None) %}
103 
104 .. only:: html
105 
106     .. role:: raw-html(raw)
107         :format: html
108 
109     .. nbinfo::
110 
111         :raw-html:`<a href="https://colab.research.google.com/github/google/flax/blob/main/{{ docname }}"><img alt="Open In Colab" src="https://colab.research.google.com/assets/colab-badge.svg" style="vertical-align:text-bottom"></a>`
112         :raw-html:`<a href="https://github.com/google/flax/blob/main/{{ docname }}"><img alt="Open On GitHub" src="https://img.shields.io/badge/Open-on%20GitHub-blue?logo=GitHub" style="vertical-align:text-bottom"></a>`
113 
114 
115 """
116 
117 # -- Extension configuration -------------------------------------------------
118 
119 # Tell sphinx-autodoc-typehints to generate stub parameter annotations including
120 # types, even if the parameters aren't explicitly documented.
121 always_document_param_types = True
122
```
--- 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/docs/conf.py b/docs/conf.py
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -84,8 +84,8 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'sphinx_rtd_theme'
-html_style = 'css/flax_theme.css'
+html_theme = 'sphinx_book_theme'
+# html_style = 'css/flax_theme.css'
 
 # The name of an image file (relative to this directory) to place at the top
 # of the sidebar.

{"golden_diff": "diff --git a/docs/conf.py b/docs/conf.py\n--- a/docs/conf.py\n+++ b/docs/conf.py\n@@ -84,8 +84,8 @@\n # The theme to use for HTML and HTML Help pages.  See the documentation for\n # a list of builtin themes.\n #\n-html_theme = 'sphinx_rtd_theme'\n-html_style = 'css/flax_theme.css'\n+html_theme = 'sphinx_book_theme'\n+# html_style = 'css/flax_theme.css'\n \n # The name of an image file (relative to this directory) to place at the top\n # of the sidebar.\n", "issue": "New Sphinx Theme\nThe idea is to get a new and shiny theme that makes Flax's RTD page standout a little more. \r\n\r\nI've gathered a couple of options:\r\n\r\n### [JAX's Theme](https://jax.readthedocs.io/en/latest/)\r\n![Screenshot from 2022-05-25 13-16-27](https://user-images.githubusercontent.com/5862228/170337666-3fdac1a8-d6c6-45ad-805e-8c3723c487a3.png)\r\n### [Pydata Sphinx Theme](https://pydata-sphinx-theme.readthedocs.io/en/latest/user_guide/index.html)\r\n![Screenshot from 2022-05-25 13-17-39](https://user-images.githubusercontent.com/5862228/170337899-f9ae6ecf-5681-4a32-b5e6-4b56f4f83be6.png)\r\n### [Furo](https://pradyunsg.me/furo/quickstart/)\r\n![Screenshot from 2022-05-25 13-19-51](https://user-images.githubusercontent.com/5862228/170338218-ca637285-bf1b-4fc2-8637-a18b8c922ad5.png)\r\n\n", "before_files": [{"content": "# Copyright 2022 The Flax Authors.\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n#\n#     http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\n\"\"\"Configuration file for the Sphinx documentation builder.\"\"\"\n\n\n# This file only contains a selection of the most common options. For a full\n# list see the documentation:\n# https://www.sphinx-doc.org/en/master/usage/configuration.html\n\n# -- Path setup --------------------------------------------------------------\n\n# If extensions (or modules to document with autodoc) are in another directory,\n# add these directories to sys.path here. If the directory is relative to the\n# documentation root, use os.path.abspath to make it absolute, like shown here.\n#\n# import os\n# import sys\n# sys.path.insert(0, os.path.abspath('.'))\n\nimport os\nimport sys\nsys.path.insert(0, os.path.abspath('..'))\n# Include local extension.\nsys.path.append(os.path.abspath('./_ext'))\n\n# -- Project information -----------------------------------------------------\n\nproject = 'Flax'\ncopyright = '2020, The Flax authors'  # pylint: disable=redefined-builtin\nauthor = 'The Flax authors'\n\n\n# -- General configuration ---------------------------------------------------\n\n# Add any Sphinx extension module names here, as strings. They can be\n# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom\n# ones.\nextensions = [\n    'sphinx.ext.autodoc',\n    'sphinx.ext.autosummary',\n    'sphinx.ext.autosectionlabel',\n    'sphinx.ext.doctest',\n    'sphinx.ext.intersphinx',\n    'sphinx.ext.mathjax',\n    'sphinx.ext.napoleon',\n    'sphinx.ext.viewcode',\n    'nbsphinx',\n    'recommonmark',\n    'codediff',\n    'sphinx_markdown_tables'\n]\n\n# Add any paths that contain templates here, relative to this directory.\ntemplates_path = ['_templates']\n\n# List of patterns, relative to source directory, that match files and\n# directories to ignore when looking for source files.\n# This pattern also affects html_static_path and html_extra_path.\nexclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']\n\nsource_suffix = ['.rst', '.md']\n\nautosummary_generate = True\n\nmaster_doc = 'index'\n\nautodoc_typehints = 'description'\n\n\n# -- Options for HTML output -------------------------------------------------\n\n# The theme to use for HTML and HTML Help pages.  See the documentation for\n# a list of builtin themes.\n#\nhtml_theme = 'sphinx_rtd_theme'\nhtml_style = 'css/flax_theme.css'\n\n# The name of an image file (relative to this directory) to place at the top\n# of the sidebar.\nhtml_logo = './flax.png'\n\n# Add any paths that contain custom static files (such as style sheets) here,\n# relative to this directory. They are copied after the builtin static files,\n# so a file named \"default.css\" will overwrite the builtin \"default.css\".\nhtml_static_path = ['_static']\n\nnbsphinx_codecell_lexer = 'ipython3'\n\nnbsphinx_prolog = r\"\"\"\n{% set docname = 'docs/' + env.doc2path(env.docname, base=None) %}\n\n.. only:: html\n\n    .. role:: raw-html(raw)\n        :format: html\n\n    .. nbinfo::\n\n        :raw-html:`<a href=\"https://colab.research.google.com/github/google/flax/blob/main/{{ docname }}\"><img alt=\"Open In Colab\" src=\"https://colab.research.google.com/assets/colab-badge.svg\" style=\"vertical-align:text-bottom\"></a>`\n        :raw-html:`<a href=\"https://github.com/google/flax/blob/main/{{ docname }}\"><img alt=\"Open On GitHub\" src=\"https://img.shields.io/badge/Open-on%20GitHub-blue?logo=GitHub\" style=\"vertical-align:text-bottom\"></a>`\n\n\n\"\"\"\n\n# -- Extension configuration -------------------------------------------------\n\n# Tell sphinx-autodoc-typehints to generate stub parameter annotations including\n# types, even if the parameters aren't explicitly documented.\nalways_document_param_types = True\n", "path": "docs/conf.py"}], "after_files": [{"content": "# Copyright 2022 The Flax Authors.\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n#\n#     http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\n\"\"\"Configuration file for the Sphinx documentation builder.\"\"\"\n\n\n# This file only contains a selection of the most common options. For a full\n# list see the documentation:\n# https://www.sphinx-doc.org/en/master/usage/configuration.html\n\n# -- Path setup --------------------------------------------------------------\n\n# If extensions (or modules to document with autodoc) are in another directory,\n# add these directories to sys.path here. If the directory is relative to the\n# documentation root, use os.path.abspath to make it absolute, like shown here.\n#\n# import os\n# import sys\n# sys.path.insert(0, os.path.abspath('.'))\n\nimport os\nimport sys\nsys.path.insert(0, os.path.abspath('..'))\n# Include local extension.\nsys.path.append(os.path.abspath('./_ext'))\n\n# -- Project information -----------------------------------------------------\n\nproject = 'Flax'\ncopyright = '2020, The Flax authors'  # pylint: disable=redefined-builtin\nauthor = 'The Flax authors'\n\n\n# -- General configuration ---------------------------------------------------\n\n# Add any Sphinx extension module names here, as strings. They can be\n# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom\n# ones.\nextensions = [\n    'sphinx.ext.autodoc',\n    'sphinx.ext.autosummary',\n    'sphinx.ext.autosectionlabel',\n    'sphinx.ext.doctest',\n    'sphinx.ext.intersphinx',\n    'sphinx.ext.mathjax',\n    'sphinx.ext.napoleon',\n    'sphinx.ext.viewcode',\n    'nbsphinx',\n    'recommonmark',\n    'codediff',\n    'sphinx_markdown_tables'\n]\n\n# Add any paths that contain templates here, relative to this directory.\ntemplates_path = ['_templates']\n\n# List of patterns, relative to source directory, that match files and\n# directories to ignore when looking for source files.\n# This pattern also affects html_static_path and html_extra_path.\nexclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']\n\nsource_suffix = ['.rst', '.md']\n\nautosummary_generate = True\n\nmaster_doc = 'index'\n\nautodoc_typehints = 'description'\n\n\n# -- Options for HTML output -------------------------------------------------\n\n# The theme to use for HTML and HTML Help pages.  See the documentation for\n# a list of builtin themes.\n#\nhtml_theme = 'sphinx_book_theme'\n# html_style = 'css/flax_theme.css'\n\n# The name of an image file (relative to this directory) to place at the top\n# of the sidebar.\nhtml_logo = './flax.png'\n\n# Add any paths that contain custom static files (such as style sheets) here,\n# relative to this directory. They are copied after the builtin static files,\n# so a file named \"default.css\" will overwrite the builtin \"default.css\".\nhtml_static_path = ['_static']\n\nnbsphinx_codecell_lexer = 'ipython3'\n\nnbsphinx_prolog = r\"\"\"\n{% set docname = 'docs/' + env.doc2path(env.docname, base=None) %}\n\n.. only:: html\n\n    .. role:: raw-html(raw)\n        :format: html\n\n    .. nbinfo::\n\n        :raw-html:`<a href=\"https://colab.research.google.com/github/google/flax/blob/main/{{ docname }}\"><img alt=\"Open In Colab\" src=\"https://colab.research.google.com/assets/colab-badge.svg\" style=\"vertical-align:text-bottom\"></a>`\n        :raw-html:`<a href=\"https://github.com/google/flax/blob/main/{{ docname }}\"><img alt=\"Open On GitHub\" src=\"https://img.shields.io/badge/Open-on%20GitHub-blue?logo=GitHub\" style=\"vertical-align:text-bottom\"></a>`\n\n\n\"\"\"\n\n# -- Extension configuration -------------------------------------------------\n\n# Tell sphinx-autodoc-typehints to generate stub parameter annotations including\n# types, even if the parameters aren't explicitly documented.\nalways_document_param_types = True\n", "path": "docs/conf.py"}]}