VisualBertModel
[[autodoc]] VisualBertModel
    - forward
VisualBertForPreTraining
[[autodoc]] VisualBertForPreTraining
    - forward
VisualBertForQuestionAnswering
[[autodoc]] VisualBertForQuestionAnswering
    - forward
VisualBertForMultipleChoice
[[autodoc]] VisualBertForMultipleChoice
    - forward
VisualBertForVisualReasoning
[[autodoc]] VisualBertForVisualReasoning
    - forward
VisualBertForRegionToPhraseAlignment
[[autodoc]] VisualBertForRegionToPhraseAlignment
    - forward
