What are the supposed files extensions for write_voxel_grid?

[tempaccountforissue]

In the docs, it lists the supported file extensions for pointclouds, meshes, and images. However, it does not list the supported file extensions for voxel grids. What are the supported file extensions for voxel grids?

[Wissotsky]

According to this code it only supports .ply files(both reading and writing)

Open3D/cpp/open3d/io/VoxelGridIO.cpp

Lines 20 to 35 in 1e7b174

	static const std::unordered_map<
	std::string,
	std::function<bool(const std::string &, geometry::VoxelGrid &, bool)>>
	file_extension_to_voxelgrid_read_function{
	{"ply", ReadVoxelGridFromPLY},
	};
	static const std::unordered_map<std::string,
	std::function<bool(const std::string &,
	const geometry::VoxelGrid &,
	const bool,
	const bool,
	const bool)>>
	file_extension_to_voxelgrid_write_function{
	{"ply", WriteVoxelGridToPLY},
	};