No mapping found for field <field> on class <class> on graphql request when adding a getter with the same return type as a doctrine association

[MrSpider]

API Platform version(s) affected: 3.0.4

Description
When an entity has a getter with the same type as a relation the Link generated by the LinkFactory gets overriden by the link detected via the getter in LinkResourceMetadataCollectionFactory::mergeLinks.

How to reproduce

1. Take api-platform demo app
2. Add the following getter to Book.php

public function getSomeImportantReview(): Review
{
    return new Review();
}

3. Execute the following graphql query

{
  books {
    edges {
      node {
        id
        reviews {
          edges {
            node {
              id
            }
          }
        }
      }
    }
  }
}

4. You should receive the following error message

"No mapping found for field 'someImportantReview' on class 'App\\Entity\\Book'.",

Possible Solution
Depending on whether this usage should be supported the Links generated by LinkFactory::createLinksFromRelations should only include doctrine relations and no relations detected by getter only.

Additional Context

[alanpoulain]

I think it has been fixed by #5169.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.