An IMaterialDefinition object represents a material definition in the game. A Material Definition is needed if you want to create a new block.

It might be required for you to import the package if you encounter any issues, so better be safe than sorry and add the import.
import mods.contenttweaker.BlockMaterial;

You can get such an object using the Block Material Bracket Handler:
<blockmaterial:wood>

ZenGetter	ZenMethod	返回值类型
ZenGetter blocksLight	ZenMethod blocksLight()	返回值类型 bool
ZenGetter blocksMovement #是否可移动	ZenMethod blocksMovement()	返回值类型 bool
ZenGetter canBurn	ZenMethod getCanBurn()	返回值类型 bool
ZenGetter mobilityFlag	ZenMethod getMobilityFlag()	返回值类型 PushReaction
ZenGetter liquid	ZenMethod isLiquid()	返回值类型 bool
ZenGetter opaque	ZenMethod isOpaque()	返回值类型 bool
ZenGetter replaceable	ZenMethod isReplaceable()	返回值类型 bool
ZenGetter solid	ZenMethod isSolid()	返回值类型 bool
ZenGetter toolNotRequired	ZenMethod isToolNotRequired()	返回值类型 bool

You can use the == operator to see if two MaterialDefinitions are equal

ZenScript
 Copy
if(materialA == materialB)
    print("success!");