Minor minor changes

core/src/main/java/org/geysermc/geyser/level/block/property/BasicEnumProperty.java

@@ -47,7 +47,7 @@ public int valuesCount() {
     public int indexOf(String value) {
         int index = this.values.indexOf(value);
         if (index == -1) {
-            throw new IllegalStateException("Property " + this + " does not have value " + value);
+            throw new IllegalArgumentException("Property " + this + " does not have value " + value);
         }
         return index;
     }

core/src/main/java/org/geysermc/geyser/level/block/type/BlockState.java

@@ -35,7 +35,7 @@ public final class BlockState {
     private final Block block;
     private final int javaId;
     /**
-     * The values of each property of this block state. These should be treated as keys to {@link Block#propertyKeys()}
+     * The values of each property of this block state. These should be treated as keys to {@link Block#propertyKeys()}.
      * Of note - the comparable part probably doesn't do anything because we occasionally use strings in place of enums.
      * Will be null if there's only one block state for a block.
      */
@@ -135,7 +135,7 @@ public <T extends Comparable<T>> BlockState withValue(Property<T> property, T va
             // The above for loop will always stop at the first break because the last property has already been found
             diff = 1;
         }
-        return BlockState.of(this.javaId + ((thatOffset - thisOffset) * diff));
+        return of(this.javaId + ((thatOffset - thisOffset) * diff));
     }
 
     public Block block() {