[STORY] Write unittest to cover a line in the PR patch

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Metadata

Epic: #33 Feature: #44 Feature Release:

Description

As the primary developer of the Arcana package, I want the patch coverage on the Pydra PR https://github.com/nipype/pydra/pull/585 to be increased to >= 80%, so that the PR can be easily merged and included in the next Pydra release in order for Arcana to be released

Acceptance Criteria

• [ ] Codecov patch coverage >= 80% for https://github.com/nipype/pydra/pull/585