make method supportsClass() in custom voter compatible with the interface's documentation
bug #3707 make method supportsClass() in custom voter compatible with the interface's documentation (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
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make method supportsClass() in custom voter compatible with the interface's documentation

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all
| Fixed tickets | #3702

Commits
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36384db make method supportsClass() in custom voter compatible with the interface's documentation