Standardize function schedule create

[doctrino]

Description

Please describe the change you have made.

Checklist:

• [ ] Tests added/updated.
• [ ] Documentation updated. Documentation is generated from docstrings - these must be updated according to your change. If a new method has been added it should be referenced in cognite.rst in order to generate docs based on its docstring.
• [ ] Changelog updated in CHANGELOG.md.
• [ ] Version bumped. If triggering a new release is desired, bump the version number in _version.py and pyproject.toml per semantic versioning.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 94.73684% with 1 line in your changes missing coverage. Please review.

Project coverage is 91.06%. Comparing base (8d5f541) to head (2081f9c).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1858 +/- ## ========================================== - Coverage 91.07% 91.06% -0.01% ========================================== Files 124 124 Lines 19239 19245 +6 ========================================== + Hits 17521 17525 +4 - Misses 1718 1720 +2 ``` | [Files](https://app.codecov.io/gh/cognitedata/cognite-sdk-python/pull/1858?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cognitedata) | Coverage Δ | | |---|---|---| | [cognite/client/\_version.py](https://app.codecov.io/gh/cognitedata/cognite-sdk-python/pull/1858?src=pr&el=tree&filepath=cognite%2Fclient%2F_version.py&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cognitedata#diff-Y29nbml0ZS9jbGllbnQvX3ZlcnNpb24ucHk=) | `100.00% <100.00%> (ø)` | | | [cognite/client/\_api/functions.py](https://app.codecov.io/gh/cognitedata/cognite-sdk-python/pull/1858?src=pr&el=tree&filepath=cognite%2Fclient%2F_api%2Ffunctions.py&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cognitedata#diff-Y29nbml0ZS9jbGllbnQvX2FwaS9mdW5jdGlvbnMucHk=) | `94.95% <94.44%> (-0.22%)` | :arrow_down: | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/cognitedata/cognite-sdk-python/pull/1858/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cognitedata)