A block with type HIDDEN_FIELDS. Used for hidden form fields.
Unique identifier for this block.
HIDDEN_FIELDS 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.
HIDDEN_FIELDS Payload for HIDDEN_FIELDS block type. Used for hidden form fields.