autoapi class.rst doesn't render multiple return types

[pkrull-ansys]

🔍 Before submitting the issue

• I have searched among the existing issues
• I am using a Python virtual environment

🐞 Description of the bug

    @property
    def geometry(self) -> StlFile | BuildFile:
        """Part geometry."""
        return self._geometry

renders as

📝 Steps to reproduce

Write a class property or method that returns multiple possible types and annotate it using 3.10+ annotation style. Generate documentation using autoapi and ansys-sphinx-theme. Only the last return type is shown in the generated docs.

💻 Which operating system are you using?

Windows

📀 Which ANSYS version are you using?

24.1

🐍 Which Python version are you using?

3.9

📦 Installed packages

ansys-api-additive==1.4.1
ansys-api-platform-instancemanagement==1.0.0
ansys-platform-instancemanagement==1.1.2
ansys-templates==1.7.0
arrow==1.3.0
binaryornot==0.4.4
bleach==6.1.0
bokeh==3.3.0
cachetools==5.3.2
certifi==2023.7.22
cfgv==3.4.0
chardet==5.2.0
charset-normalizer==3.3.2
click==8.1.7
colorama==0.4.6
contourpy==1.1.1
cookiecutter==2.2.3
coverage==7.3.2
dill==0.3.7
distlib==0.3.7
exceptiongroup==1.1.3
filelock==3.13.1
google-api-core==2.12.0
google-api-python-client==2.106.0
google-auth==2.23.4
google-auth-httplib2==0.1.1
googleapis-common-protos==1.61.0
grpcio==1.59.2
grpcio-health-checking==1.48.2
httplib2==0.22.0
identify==2.5.31
idna==3.4
importlib-metadata==6.8.0
iniconfig==2.0.0
isort==5.12.0
Jinja2==3.1.2
linkify-it-py==2.0.2
Markdown==3.5.1
markdown-it-py==3.0.0
MarkupSafe==2.1.3
mdit-py-plugins==0.4.0
mdurl==0.1.2
nodeenv==1.8.0
numpy==1.26.1
packaging==23.2
pandas==2.1.2
panel==1.3.1
param==2.0.0
Pillow==10.1.0
platformdirs==3.11.0
plotly==5.18.0
pluggy==1.3.0
pre-commit==3.5.0
protobuf==3.20.3
pyasn1==0.5.0
pyasn1-modules==0.3.0
pyparsing==3.1.1
pyproject-api==1.6.1
pytest==7.4.3
pytest-cov==4.1.0
python-dateutil==2.8.2
python-slugify==8.0.1
pytz==2023.3.post1
pyviz_comms==3.0.0
PyYAML==6.0.1
requests==2.31.0
rsa==4.9
six==1.16.0
tenacity==8.2.3
text-unidecode==1.3
tomli==2.0.1
tornado==6.3.3
tox==4.11.3
tqdm==4.66.1
types-python-dateutil==2.8.19.14
typing_extensions==4.8.0
tzdata==2023.3
uc-micro-py==1.0.2
uritemplate==4.1.1
urllib3==2.0.7
virtualenv==20.24.6
webencodings==0.5.1
xyzservices==2023.10.1
zipp==3.17.0

[RobPasMue]

This is more of a sphinx-autoapi issue if I am not mistaken. Assigning to @jorgepiloto

[jorgepiloto]

Thanks for the ping. Roberto is right, we need to check if this comes from our class.rst template or it originates in the internals of sphinx-autoapi.

[jorgepiloto]

I thought the | symbol for representing a union was only supported in Python 3.10+. Could you try using:

from typing import Union

  @property
    def geometry(self) -> Union[StlFile, BuildFile]:
        """Part geometry."""
        return self._geometry

This also ensures compatibility with 3.9.

[pkrull-ansys]

@jorgepiloto The source file contains from __future__ import annotations. I'd prefer to keep the 3.10+ type specifications if possible.