@ Nullable @ IsLocked ( ELockType . READ ) protected final INTERFACETYPE getAtIndex ( @ Nonnegative final int nIndex ) { return m_aRWLock . readLocked ( ( ) -> CollectionHelper . getAtIndex ( m_aMap . values ( ) , nIndex ) ) ; }
Get the item at the specified index . This method only returns defined results if an ordered map is used for data storage .