A traversable material is any block a user can walk through.
Generally, such blocks are used as portal open/closed materials.
Note that all traversables are enum materials
- AIR
- WATER
- SUGAR_CANE
- TALL_GRASS
- LARGE_FERN
- LILAC
- ROSE_BUSH
- PEONY
- DEAD_BUSH
- END_GATEWAY
- NETHER_PORTAL
- POWDER_SNOW
- KELP_PLANT
- TUBE_CORAL
- BRAIN_CORAL
- BUBBLE_CORAL
- FIRE_CORAL
- HORN_CORAL
- DEAD__CORAL
- TALL_SEAGRASS
- WARPED_ROOTS
- CRIMSON_ROOTS
- WEEPING_VINES
- TWISTING_VINES
- SCAFFOLDING
- LAVA
- _Banner
- _WALL_BANNER
- _STAINED_GLASS_PANE
- SWEET_BERRY_BUSH
- BAMBOO
- WHEAT
- STRUCTURE_VOID
- COBWEB
- BIG-DRIPLEAF_STEM
- SMALL_DRIPLEAF_STEM
- SUNFLOWER
- TORCH
- _DOOR
- _WALL_SIGN
- IRON_BARS
- _FENCE
- SEAGRASS
- CONDUIT
- BUBBLE_COLUMN