Coverage to 90%

[mavaylon1]

Motivation

What was the reasoning behind this change? Please explain the changes briefly.

How to test the behavior?

Show how to reproduce the new behavior (can be a bug fix or a new feature)

Checklist

• Did you update CHANGELOG.md with your changes?
• Does the PR clearly describe the problem and the solution?
• Have you reviewed our Contributing Guide?
• Does the PR use "Fix #XXX" notation to tell GitHub to close the relevant issue numbered XXX when the PR is merged?

[codecov]

Codecov Report

Attention: Patch coverage is 96.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 89.87%. Comparing base (b7a5fe2) to head (146f7e4).

Files with missing lines	Patch %	Lines
src/hdmf/backends/hdf5/h5tools.py	93.75%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1198      +/-   ##
==========================================
+ Coverage   89.03%   89.87%   +0.83%     
==========================================
  Files          45       44       -1     
  Lines        9887     9755     -132     
  Branches     2815     2785      -30     
==========================================
- Hits         8803     8767      -36     
+ Misses        767      677      -90     
+ Partials      317      311       -6     

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