WhitespaceDataProvider::getCollections() doesn't respect return format
>>> [!note] Migrated issue
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Reported by: [joachim](https://www.drupal.org/user/107701)
Related to !29
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>The docs in providers.md *imply* that the return value of getCollections() will always have a 'dates' and 'weekly_collection' key.</p>
<p>But WhitespaceDataProvider::getCollections() can return just an empty array if there are no collections -- e.g. for a non-residential address.</p>
<h4 id="summary-steps-reproduce">Steps to reproduce</h4>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<p>Either fix the docs, or fix WhitespaceDataProvider::getCollections().</p>
<p>It would also be better to formally document the return value on the interface rather than in a markdown file.</p>
<h3 id="summary-remaining-tasks">Remaining tasks</h3>
<h3 id="summary-ui-changes">User interface changes</h3>
<h3 id="summary-api-changes">API changes</h3>
<h3 id="summary-data-model-changes">Data model changes</h3>
issue