Remove extra blank lines

src/main/java/org/apache/commons/collections4/ArrayUtils.java

@@ -37,7 +37,6 @@
  */
 final class ArrayUtils {
 
-
     /**
      * Don't allow instances.
      */

src/main/java/org/apache/commons/collections4/CollectionUtils.java

@@ -1795,7 +1795,6 @@ public static <O> List<O> collate(final Iterable<? extends O> iterableA, final I
         return mergedList;
     }
 
-
     /**
      * Returns a {@link Collection} of all the permutations of the input collection.
      * <p>

src/main/java/org/apache/commons/collections4/ListUtils.java

@@ -63,7 +63,6 @@ public int size() {
         }
     }
 
-
     /**
      * A helper class used to construct the longest common subsequence.
      */

src/main/java/org/apache/commons/collections4/QueueUtils.java

@@ -42,7 +42,6 @@ public class QueueUtils {
      */
     private QueueUtils() {}
 
-
     /**
      * Returns a synchronized (thread-safe) queue backed by the given queue.
      * In order to guarantee serial access, it is critical that all access to the

src/main/java/org/apache/commons/collections4/SetUtils.java

@@ -198,7 +198,6 @@ public static <T> Set<T> emptyIfNull(final Set<T> set) {
         return set == null ? Collections.<T>emptySet() : set;
     }
 
-
     /**
      * Gets a typed empty unmodifiable Set.
      * @param <E> the element type

src/main/java/org/apache/commons/collections4/SplitMapUtils.java

@@ -43,7 +43,6 @@ public class SplitMapUtils {
      */
     private SplitMapUtils() {}
 
-
     private static final class WrappedGet<K, V> implements IterableMap<K, V>, Unmodifiable {
         private final Get<K, V> get;
 
@@ -218,7 +217,6 @@ public Collection<V> values() {
         }
     }
 
-
     /**
      * Gets the specified {@link Get} as an instance of {@link IterableMap}.
      * If {@code get} implements {@link IterableMap} directly, no conversion will take place.

src/main/java/org/apache/commons/collections4/bag/AbstractBagDecorator.java

@@ -73,7 +73,6 @@ public int hashCode() {
         return decorated().hashCode();
     }
 
-
     @Override
     public int getCount(final Object object) {
         return decorated().getCount(object);

src/main/java/org/apache/commons/collections4/bag/AbstractSortedBagDecorator.java

@@ -62,7 +62,6 @@ protected SortedBag<E> decorated() {
         return (SortedBag<E>) super.decorated();
     }
 
-
     @Override
     public E first() {
         return decorated().first();

src/main/java/org/apache/commons/collections4/bag/PredicatedBag.java

@@ -101,7 +101,6 @@ public int hashCode() {
         return decorated().hashCode();
     }
 
-
     @Override
     public boolean add(final E object, final int count) {
         validate(object);

src/main/java/org/apache/commons/collections4/bag/PredicatedSortedBag.java

@@ -89,7 +89,6 @@ protected SortedBag<E> decorated() {
         return (SortedBag<E>) super.decorated();
     }
 
-
     @Override
     public E first() {
         return decorated().first();

src/main/java/org/apache/commons/collections4/bag/SynchronizedBag.java

@@ -100,7 +100,6 @@ public int hashCode() {
         }
     }
 
-
     @Override
     public boolean add(final E object, final int count) {
         synchronized (lock) {

src/main/java/org/apache/commons/collections4/bag/SynchronizedSortedBag.java

@@ -83,7 +83,6 @@ protected SortedBag<E> getSortedBag() {
         return (SortedBag<E>) decorated();
     }
 
-
     @Override
     public synchronized E first() {
         synchronized (lock) {

src/main/java/org/apache/commons/collections4/bag/TransformedBag.java

@@ -121,7 +121,6 @@ public int hashCode() {
         return decorated().hashCode();
     }
 
-
     @Override
     public int getCount(final Object object) {
         return getBag().getCount(object);
@@ -132,7 +131,6 @@ public boolean remove(final Object object, final int nCopies) {
         return getBag().remove(object, nCopies);
     }
 
-
     @Override
     public boolean add(final E object, final int nCopies) {
         return getBag().add(transform(object), nCopies);

src/main/java/org/apache/commons/collections4/bag/TransformedSortedBag.java

@@ -112,7 +112,6 @@ protected SortedBag<E> getSortedBag() {
         return (SortedBag<E>) decorated();
     }
 
-
     @Override
     public E first() {
         return getSortedBag().first();

src/main/java/org/apache/commons/collections4/bag/TreeBag.java

@@ -95,7 +95,6 @@ public boolean add(final E object) {
         return super.add(object);
     }
 
-
     @Override
     public E first() {
         return getMap().firstKey();

src/main/java/org/apache/commons/collections4/bidimap/DualTreeBidiMap.java

@@ -130,7 +130,6 @@ protected DualTreeBidiMap<V, K> createBidiMap(final Map<V, K> normalMap, final M
         return new DualTreeBidiMap<>(normalMap, reverseMap, inverseMap);
     }
 
-
     @Override
     public Comparator<? super K> comparator() {
         return ((SortedMap<K, V>) normalMap).comparator();
@@ -205,7 +204,6 @@ public OrderedBidiMap<V, K> inverseOrderedBidiMap() {
         return inverseBidiMap();
     }
 
-
     @Override
     public SortedMap<K, V> headMap(final K toKey) {
         final SortedMap<K, V> sub = ((SortedMap<K, V>) normalMap).headMap(toKey);

src/main/java/org/apache/commons/collections4/bidimap/TreeBidiMap.java

@@ -672,7 +672,6 @@ private Node<K, V> nextSmaller(final Node<K, V> node, final DataElement dataElem
         return rval;
     }
 
-
     /**
      * Compares two objects.
      *

src/main/java/org/apache/commons/collections4/collection/AbstractCollectionDecorator.java

@@ -103,7 +103,6 @@ protected void setCollection(final Collection<E> coll) {
         this.collection = coll;
     }
 
-
     @Override
     public boolean add(final E object) {
         return decorated().add(object);

src/main/java/org/apache/commons/collections4/collection/IndexedCollection.java

@@ -257,7 +257,6 @@ public boolean retainAll(final Collection<?> coll) {
         return changed;
     }
 
-
     /**
      * Provides checking for adding the index.
      *

src/main/java/org/apache/commons/collections4/collection/SynchronizedCollection.java

@@ -96,7 +96,6 @@ protected Collection<E> decorated() {
         return collection;
     }
 
-
     @Override
     public boolean add(final E object) {
         synchronized (lock) {

src/main/java/org/apache/commons/collections4/iterators/AbstractListIteratorDecorator.java

@@ -52,7 +52,6 @@ protected ListIterator<E> getListIterator() {
         return iterator;
     }
 
-
     /** {@inheritDoc} */
     @Override
     public boolean hasNext() {

src/main/java/org/apache/commons/collections4/iterators/AbstractMapIteratorDecorator.java

@@ -53,7 +53,6 @@ protected MapIterator<K, V> getMapIterator() {
         return iterator;
     }
 
-
     /** {@inheritDoc} */
     @Override
     public boolean hasNext() {

src/main/java/org/apache/commons/collections4/iterators/AbstractOrderedMapIteratorDecorator.java

@@ -53,7 +53,6 @@ protected OrderedMapIterator<K, V> getOrderedMapIterator() {
         return iterator;
     }
 
-
     /** {@inheritDoc} */
     @Override
     public boolean hasNext() {

src/main/java/org/apache/commons/collections4/iterators/BoundedIterator.java

@@ -49,7 +49,6 @@ public class BoundedIterator<E> implements Iterator<E> {
     /** The position of the current element */
     private long pos;
 
-
     /**
      * Decorates the specified iterator to return at most the given number of elements,
      * skipping all elements until the iterator reaches the position at {@code offset}.
@@ -88,7 +87,6 @@ private void init() {
         }
     }
 
-
     @Override
     public boolean hasNext() {
         if (!checkBounds()) {

src/main/java/org/apache/commons/collections4/iterators/CollatingIterator.java

@@ -27,7 +27,6 @@
 
 import org.apache.commons.collections4.list.UnmodifiableList;
 
-
 /**
  * Provides an ordered iteration over the elements contained in a collection of
  * ordered Iterators.

src/main/java/org/apache/commons/collections4/iterators/LazyIteratorChain.java

@@ -63,7 +63,6 @@ public abstract class LazyIteratorChain<E> implements Iterator<E> {
      */
     private Iterator<? extends E> lastUsedIterator;
 
-
     /**
      * Gets the next iterator after the previous one has been exhausted.
      * <p>
@@ -100,7 +99,6 @@ private void updateCurrentIterator() {
         }
     }
 
-
     /**
      * Return true if any Iterator in the chain has a remaining element.
      *

src/main/java/org/apache/commons/collections4/iterators/PeekingIterator.java

@@ -64,7 +64,6 @@ public static <E> PeekingIterator<E> peekingIterator(final Iterator<? extends E>
         return new PeekingIterator<>(iterator);
     }
 
-
     /**
      * Constructor.
      *

src/main/java/org/apache/commons/collections4/iterators/PushbackIterator.java

@@ -61,7 +61,6 @@ public static <E> PushbackIterator<E> pushbackIterator(final Iterator<? extends
         return new PushbackIterator<>(iterator);
     }
 
-
     /**
      * Constructor.
      *

src/main/java/org/apache/commons/collections4/iterators/SkippingIterator.java

@@ -37,7 +37,6 @@ public class SkippingIterator<E> extends AbstractIteratorDecorator<E> {
     /** The position of the current element */
     private long pos;
 
-
     /**
      * Decorates the specified iterator to skip all elements until the iterator
      * reaches the position at {@code offset}.
@@ -71,7 +70,6 @@ private void init() {
         }
     }
 
-
     @Override
     public E next() {
         final E next = super.next();

src/main/java/org/apache/commons/collections4/keyvalue/AbstractMapEntryDecorator.java

@@ -53,7 +53,6 @@ protected Map.Entry<K, V> getMapEntry() {
         return entry;
     }
 
-
     @Override
     public K getKey() {
         return entry.getKey();

src/main/java/org/apache/commons/collections4/keyvalue/MultiKey.java

@@ -131,7 +131,6 @@ public MultiKey(final K key1, final K key2) {
         this(newArray(key1, key2), false);
     }
 
-
     /**
      * Constructor taking three keys.
      * <p>

src/main/java/org/apache/commons/collections4/list/AbstractLinkedList.java

@@ -99,7 +99,6 @@ protected void init() {
         header = createHeaderNode();
     }
 
-
     @Override
     public int size() {
         return size;
@@ -116,7 +115,6 @@ public E get(final int index) {
         return node.getValue();
     }
 
-
     @Override
     public Iterator<E> iterator() {
         return listIterator();
@@ -132,7 +130,6 @@ public ListIterator<E> listIterator(final int fromIndex) {
         return new LinkedListIterator<>(this, fromIndex);
     }
 
-
     @Override
     public int indexOf(final Object value) {
         int i = 0;
@@ -172,7 +169,6 @@ public boolean containsAll(final Collection<?> coll) {
         return true;
     }
 
-
     @Override
     public Object[] toArray() {
         return toArray(new Object[size]);
@@ -210,7 +206,6 @@ public List<E> subList(final int fromIndexInclusive, final int toIndexExclusive)
         return new LinkedSubList<>(this, fromIndexInclusive, toIndexExclusive);
     }
 
-
     @Override
     public boolean add(final E value) {
         addLast(value);
@@ -237,7 +232,6 @@ public boolean addAll(final int index, final Collection<? extends E> coll) {
         return true;
     }
 
-
     @Override
     public E remove(final int index) {
         final Node<E> node = getNode(index, false);
@@ -279,7 +273,6 @@ public boolean removeAll(final Collection<?> coll) {
         return modified;
     }
 
-
     /**
      * {@inheritDoc}
      * <p>
@@ -315,7 +308,6 @@ public void clear() {
         removeAllNodes();
     }
 
-
     public E getFirst() {
         final Node<E> node = header.next;
         if (node == header) {

src/main/java/org/apache/commons/collections4/list/AbstractListDecorator.java

@@ -74,7 +74,6 @@ public int hashCode() {
         return decorated().hashCode();
     }
 
-
     @Override
     public void add(final int index, final E object) {
         decorated().add(index, object);

src/main/java/org/apache/commons/collections4/list/PredicatedList.java

@@ -105,7 +105,6 @@ public int hashCode() {
         return decorated().hashCode();
     }
 
-
     @Override
     public E get(final int index) {
         return decorated().get(index);
@@ -126,7 +125,6 @@ public E remove(final int index) {
         return decorated().remove(index);
     }
 
-
     @Override
     public void add(final int index, final E object) {
         validate(object);

src/main/java/org/apache/commons/collections4/list/TransformedList.java

@@ -124,7 +124,6 @@ public int hashCode() {
         return decorated().hashCode();
     }
 
-
     @Override
     public E get(final int index) {
         return getList().get(index);
@@ -145,7 +144,6 @@ public E remove(final int index) {
         return getList().remove(index);
     }
 
-
     @Override
     public void add(final int index, E object) {
         object = transform(object);