World world = // get the current world object BlockPos pos = new BlockPos(x, y, z); // create a new block position object Block block = world.getBlock(pos); // get the block at the given positionIn this code, we first retrieve the current `World` object using some other means (such as through a Minecraft plugin). We then create a new `BlockPos` object with the given x, y, and z coordinates. Finally, we use the `getBlock` method to get the `Block` object at that position. With the `Block` object that we obtain, we can then perform various operations, such as accessing its properties or modifying it in some way. Overall, the `net.minecraft.world` package library provides a powerful set of tools for interacting with Minecraft game worlds, and the `World` class in particular is essential for many types of Minecraft plugins and modifications.