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<dd>Returns a list of all database objects of class <code>cls</code>, where the
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and <code>hook</code> should specify a <code><a
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href="refT.html#tree">tree</a></code> for <code>cls</code> or one of its
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values for the result list are obtained by applying the <code><a
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href="refG.html#get">get</a></code> algorithm. See also <code><a
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href="refD.html#db">db</a></code>, <code><a href="refA.html#aux">aux</a></code>,