How to use

retainAllHelper

method

in

com.lody.virtual.helper.collection.MapCollections

/**
 * Remove all keys in the array map that do <b>not</b> exist in the given collection.
 * @param collection The collection whose contents are to be used to determine which
 * keys to keep.
 * @return Returns true if any keys were removed from the array map, else false.
 */
public boolean retainAll(Collection<?> collection) {
  return MapCollections.retainAllHelper(this, collection);
}

/**
 * Remove all keys in the array map that do <b>not</b> exist in the given collection.
 * @param collection The collection whose contents are to be used to determine which
 * keys to keep.
 * @return Returns true if any keys were removed from the array map, else false.
 */
public boolean retainAll(Collection<?> collection) {
  return MapCollections.retainAllHelper(this, collection);
}

/**
 * Remove all keys in the array map that do <b>not</b> exist in the given collection.
 * @param collection The collection whose contents are to be used to determine which
 * keys to keep.
 * @return Returns true if any keys were removed from the array map, else false.
 */
public boolean retainAll(Collection<?> collection) {
  return MapCollections.retainAllHelper(this, collection);
}