docs: public void convertTo( DMatrixRMaj m ) {
  		if( m.getNumElements() != 27 )
  			throw new IllegalArgumentException("Input matrix/vector must have 27 elements");
  
  		for( int i = 0; i < 9; i++ ) {
  			m.data[i] = T1.data[i];
  			m.data[i+9] = T2.data[i];
  			m.data[i+18] = T3.data[i];
  		}
  	}