SPIGOT-6480: Players cannot take books from lecterns that were opened by plugins

By: blablubbabc <lukas@wirsindwir.de>

paper-server/nms-patches/net/minecraft/world/level/block/entity/TileEntityLectern.patch

@@ -1,6 +1,6 @@
 --- a/net/minecraft/world/level/block/entity/TileEntityLectern.java
 +++ b/net/minecraft/world/level/block/entity/TileEntityLectern.java
-@@ -27,9 +27,63 @@
+@@ -27,9 +27,67 @@
  import net.minecraft.world.phys.Vec2F;
  import net.minecraft.world.phys.Vec3D;
  
@@ -60,13 +60,17 @@
 +        public InventoryHolder getOwner() {
 +            return (Lectern) TileEntityLectern.this.getOwner();
 +        }
++
++        public TileEntityLectern getLectern() {
++            return TileEntityLectern.this;
++        }
 +        // CraftBukkit end
  
 -    public final IInventory inventory = new IInventory() {
          @Override
          public int getSize() {
              return 1;
-@@ -74,11 +128,20 @@
+@@ -74,11 +132,20 @@
          }
  
          @Override
@@ -89,7 +93,7 @@
          }
  
          @Override
-@@ -160,7 +223,7 @@
+@@ -160,7 +227,7 @@
          if (j != this.page) {
              this.page = j;
              this.update();
@@ -98,7 +102,7 @@
          }
  
      }
-@@ -183,6 +246,32 @@
+@@ -183,6 +250,32 @@
          return itemstack;
      }
  
@@ -131,7 +135,7 @@
      private CommandListenerWrapper a(@Nullable EntityHuman entityhuman) {
          String s;
          Object object;
-@@ -197,7 +286,8 @@
+@@ -197,7 +290,8 @@
  
          Vec3D vec3d = Vec3D.a((BaseBlockPosition) this.position);
  
@@ -141,7 +145,7 @@
      }
  
      @Override
-@@ -236,7 +326,7 @@
+@@ -236,7 +330,7 @@
  
      @Override
      public Container createMenu(int i, PlayerInventory playerinventory, EntityHuman entityhuman) {