@SuppressWarnings("unchecked")
	protected T[][] createBuckets(int capacity) {
		return (T[][])new Object[capacity][];
	}
Return an array of {@code T[]} with length {@code capacity}.

@param capacity the length of the array to return
@return the newly constructed array
runtime/Java/src/org/antlr/v4/runtime/misc/Array2DHashSet.java