TopoElementArray_Agg — Returns a topoelementarray for a set of element_id, type arrays (topoelements).
topoelementarray TopoElementArray_Agg(topoelement set tefield);
SELECT topology.TopoElementArray_Agg(ARRAY[e,t]) As tea
FROM generate_series(1,3) As e CROSS JOIN generate_series(1,4) As t;
tea
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{{1,1},{1,2},{1,3},{1,4},{2,1},{2,2},{2,3},{2,4},{3,1},{3,2},{3,3},{3,4}}