Check getone type validation

[JonathanDe]

Proposed changes

Currently, the getOne() method is not filtering by type, this PR solves that issue. Closes (#82 )

Types of changes

What types of changes does your code introduce to Convector? Put an x in the boxes that apply

• [X] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your code.

• [X] I have read the CONTRIBUTING doc
• [X] Lint and unit tests pass locally with my changes
• [ ] All the commits have been squashed into a single commit following the conventional commits guide
• [X] All the commits are signed with git sign-off
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation (if appropriate)