[DomCrawler] Added node name getter
feature #4039 [DomCrawler] Added node name getter (fejese)

This PR was merged into the master branch.

Discussion
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[DomCrawler] Added node name getter

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | yes (symfony/symfony#11426)
| Applies to    | all
| Fixed tickets |

Commits
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09c9af4 [DomCrawler] Added node name getter