code: public CFrom<CWhere> FILTER() {
  		CFrom<CWhere> ret = CFactory.FILTER();
  		connectSubCollection(ret);
  		return ret;
  	}
docs: <div color='red' style="font-size:24px;color:red"><b><i><u>JCYPHER</u></i></b></div>
  <div color='red' style="font-size:18px;color:red"><i>return all the elements in a collection that hold true for a predicate expression</i></div>
  <div color='red' style="font-size:18px;color:red"><i>e.g. ...<b>FILTER()</b>.fromAll(x).IN(a.collectionProperty("array")).<b>WHERE()</b>...</i></div>
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