A hook even that fires when a ProseMirrorMenu's drop-downs are initialized.
The hook provides the ProseMirrorMenu instance and an object of drop-down configuration data.
Hooked functions may append their own drop-downs or append entries to existing drop-downs.
A hook even that fires when a ProseMirrorMenu's drop-downs are initialized. The hook provides the ProseMirrorMenu instance and an object of drop-down configuration data. Hooked functions may append their own drop-downs or append entries to existing drop-downs.