docs: public static void multTransB(DMatrixSparseCSC A , DMatrixSparseCSC B , DMatrixSparseCSC C ,
                                    @Nullable IGrowArray gw, @Nullable DGrowArray gx )
      {
          if( A.numCols != B.numCols )
              throw new MatrixDimensionException("Inconsistent matrix shapes. "+stringShapes(A,B));
          C.reshape(A.numRows,B.numRows);
  
          if( !B.isIndicesSorted() )
              B.sortIndices(null);
  
          ImplSparseSparseMult_DSCC.multTransB(A,B,C,gw,gx);
      }