ction.immutable.Set[String]" title="Permalink">
        <i class="material-icons"></i>
      </a>
    </span>
      <span class="modifier_kind">
        <span class="modifier"></span>
        <span class="kind">def</span>
      </span>
      <span class="symbol">
        <span class="name">genericPromotion</span><span class="params">(<span name="toPiece">toPiece: <a href="ChessPiece.html" class="extype" name="ostinato.chess.core.ChessPiece">ChessPiece</a></span>)</span><span class="result">: <span class=