CLASS net/minecraft/class_6136 net/minecraft/util/collection/LinkedBlockPosHashSet
	COMMENT Represents a set of block positions (long representation).
	COMMENT <p>
	COMMENT Uses a {@link Long2LongLinkedOpenHashMap} as its internal storage medium
	COMMENT to facilitate the quick addition and removal of block positions.
	COMMENT <p>
	COMMENT Positions are index into a 2x cubed area that then stores as a long, a bitset
	COMMENT representing which positions within that area are currently set.
	COMMENT <p>
	COMMENT This has two major advantages:
	COMMENT <ol>
	COMMENT <li>Positions that are geometrically close together are grouped together in memory. This localises adjacent reads and writes.</li>
	COMMENT <li>A larger number of positions can be comprised together into one long allowing for a smaller memory footprint.</li>
	COMMENT </ol>
	COMMENT @see net.minecraft.world.chunk.light.LevelPropagator
	FIELD field_31715 buffer Lnet/minecraft/class_6136$class_6137;
	METHOD <init> (IF)V
		ARG 1 expectedSize
		ARG 2 loadFactor
	METHOD add (J)Z
		COMMENT Marks a block position as "set".
		ARG 1 posLong
	METHOD isEmpty ()Z
		COMMENT Checks whether there are any block positions that have been "set".
		COMMENT
		COMMENT @return {@code true} is this collection is empty.
	METHOD rem (J)Z
		COMMENT Marks a block position as "not set". Effectively removing it from this collection.
		ARG 1 posLong
	METHOD removeFirstLong ()J
		COMMENT Pops first block position off of this set.
	METHOD size ()I
		COMMENT @throws UnsupportedOperationException
	CLASS class_6137 Storage
		COMMENT Represents a three-dimensional mapping from a block position to a bitset
		COMMENT of values set at that position.
		FIELD field_31716 STARTING_OFFSET I
		FIELD field_31717 HORIZONTAL_COLUMN_BIT_SEPARATION I
		FIELD field_31718 FIELD_SPACING I
		FIELD field_31719 Y_BIT_OFFSET I
		FIELD field_31720 X_BIT_OFFSET I
		FIELD field_31721 Z_BIT_OFFSET I
		FIELD field_31722 MAX_POSITION J
		FIELD field_31723 lastWrittenIndex I
		FIELD field_31724 lastWrittenKey J
		FIELD field_31725 expectedSize I
		METHOD <init> (IF)V
			ARG 1 expectedSize
			ARG 2 loadFactor
		METHOD method_35481 removeFirstLong ()J
		METHOD method_35482 setBits (IJ)Z
			COMMENT Sets flags within a specific 2x cubed region represented by {@code index}.
			COMMENT
			COMMENT @return {@code true} if the map already contained set bits for the indicated mask
			COMMENT            (i.e. an overlap occurred)
			ARG 1 index
				COMMENT zero-based index of a 2x cubed area
			ARG 2 mask
				COMMENT mask of bits to set
		METHOD method_35483 getKey (J)J
			COMMENT Converts a individual position into a key
			COMMENT representing the 2x cube region containing that position.
			ARG 0 posLong
		METHOD method_35484 getBlockPosLong (JI)J
			ARG 0 key
			ARG 2 valueLength
		METHOD method_35485 unsetBitsAt (IJ)Z
			COMMENT Unsets flags within a specific 2x cubed region contained within this map.
			COMMENT
			COMMENT @return {@code true} if the collection was changed as a result of this call
			ARG 1 index
			ARG 2 mask
		METHOD method_35486 getBlockOffset (J)I
			COMMENT Gets a position's index relative to its containing 2x cube region
			ARG 0 posLong
		METHOD method_35487 add (J)Z
			COMMENT Ensures that this collection contains the specified element (optional operation).
			COMMENT
			COMMENT @see java.util.Collection#add(Object)
			ARG 1 posLong
		METHOD method_35488 rem (J)Z
			COMMENT Removes a block position from this map.
			ARG 1 posLong
		METHOD method_35489 unsetBits (J)Z
			COMMENT Unsets flags within the last 2x cubed region contained within this map.
			COMMENT <p>
			COMMENT This is equivalent to the call {@code unsetBitsAt(this.n, mask)}
			COMMENT
			COMMENT @return {@code true} if the collection was changed as a result of this call
			ARG 1 mask
		METHOD rehash (I)V
			ARG 1 newN