message: Change order of const/non-const voxel accessor.
diff: @@ -167,8 +167,8 @@ class Layer {
  // Get a pointer to the voxel if its corresponding block is allocated and a
  // nullptr otherwise.
  - inline VoxelType* getVoxelPtrByGlobalIndex(
  - const VoxelIndex& global_voxel_index) {
  + inline const VoxelType* getVoxelPtrByGlobalIndex(
  + const VoxelIndex& global_voxel_index) const {
  const BlockIndex block_index = getBlockIndexFromGlobalVoxelIndex(
  global_voxel_index, voxels_per_side_inv_);
  if (!hasBlock(block_index)) {
  @@ -176,12 +176,12 @@ class Layer {
  }
  const VoxelIndex local_voxel_index = getLocalFromGlobalVoxelIndex(
  global_voxel_index, voxels_per_side_);
  - Block<VoxelType>& block = getBlockByIndex(block_index);
  + const Block<VoxelType>& block = getBlockByIndex(block_index);
  return &block.getVoxelByVoxelIndex(local_voxel_index);
  }
  - inline const VoxelType* getVoxelPtrByGlobalIndex(
  - const VoxelIndex& global_voxel_index) const {
  + inline VoxelType* getVoxelPtrByGlobalIndex(
  + const VoxelIndex& global_voxel_index) {
  const BlockIndex block_index = getBlockIndexFromGlobalVoxelIndex(
  global_voxel_index, voxels_per_side_inv_);
  if (!hasBlock(block_index)) {
  @@ -189,7 +189,7 @@ class Layer {
  }
  const VoxelIndex local_voxel_index = getLocalFromGlobalVoxelIndex(
  global_voxel_index, voxels_per_side_);
  - const Block<VoxelType>& block = getBlockByIndex(block_index);
  + Block<VoxelType>& block = getBlockByIndex(block_index);
  return &block.getVoxelByVoxelIndex(local_voxel_index);
  }
  