question: public static < O > IndexedCollection < O > newAutoIndexedCollection ( Iterable < Attribute < O , Comparable > > attributes ) { IndexedCollection < O > autoIndexedCollection = new ConcurrentIndexedCollection < O > ( ) ; for ( Attribute < O , ? extends Comparable > attribute : attributes ) { @ SuppressWarnings ( "unchecked" ) NavigableIndex < ? extends Comparable , O > index = NavigableIndex . onAttribute ( attribute ) ; autoIndexedCollection . addIndex ( index ) ; } return autoIndexedCollection ; }
target:  Creates an IndexedCollection and adds NavigableIndexes for the given attributes.