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The XSLT and XQuery Processor
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2018-2022 Saxonica Limited
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is "Incompatible With Secondary Licenses", as defined by the Mozilla Public License, v. 2.0.
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* This package defines implementations and subinterfaces of the interface SequenceIterator, which is
* used to iterate over an XDM sequence.
* The subinterfaces mostly represent iterators with additional capability: for example a LastPositionFinder
* can determine the number of items in the sequence without reading to the end; a GroundedIterator can deliver
* the original sequence as a list in memory; a LookaheadIterator is capable of one-item look-ahead. Note
* that just because a class implements such an interface does not mean it necessarily has this capability;
* it is necessary to check the properties of the specific iterator before assuming this.
*/
package net.sf.saxon.tree.iter;