A block with type PAGE_BREAK. Used for creating multi-page forms.
Unique identifier for this block.
PAGE_BREAK Groups related blocks together. For standalone blocks, use the block's own uuid. For child blocks (e.g., dropdown options, multiple choice options), use the parent block's uuid so all children share the same groupUuid.
PAGE_BREAK Payload for PAGE_BREAK block type. Used for multi-page form navigation.