LavaCauldronBlock
Link to lavacauldronblock
Importing the class
Link to importing-the-class
It might be required for you to import the package if you encounter any issues (like casting an Array), so better be safe than sorry and add the import at the very top of the file.
ZenScript Copyimport crafttweaker.api.block.type.cauldron.LavaCauldronBlock;
Extending AbstractCauldronBlock
Link to extending-abstractcauldronblock
LavaCauldronBlock extends AbstractCauldronBlock. That means all methods available in AbstractCauldronBlock are also available in LavaCauldronBlock