ml#var-group-by-column-consumer">group-by-column-consumer</a> </li><li> <a href="tech.v3.dataset.metamorph.html#var-has-column.3F">has-column?</a> </li><li> <a href="tech.v3.dataset.metamorph.html#var-head">head</a> </li><li> <a href="tech.v3.dataset.metamorph.html#var-induction">induction</a> </li><li> <a href="tech.v3.dataset.metamorph.html#var-inference-column.3F">inference-column?</a> </li><li> <a href="tech.v3.dataset.metamorph.html#var-inference-target-column-names">inference-target-column-names</a> <