docs: public static DMatrixRMaj convert(DMatrix5x5 input , DMatrixRMaj output ) {
          if( output == null)
              output = new DMatrixRMaj(5,5);
  
          output.reshape(input.getNumRows(),input.getNumCols());
  
          output.data[0] = input.a11;
          output.data[1] = input.a12;
          output.data[2] = input.a13;
          output.data[3] = input.a14;
          output.data[4] = input.a15;
          output.data[5] = input.a21;
          output.data[6] = input.a22;
          output.data[7] = input.a23;
          output.data[8] = input.a24;
          output.data[9] = input.a25;
          output.data[10] = input.a31;
          output.data[11] = input.a32;
          output.data[12] = input.a33;
          output.data[13] = input.a34;
          output.data[14] = input.a35;
          output.data[15] = input.a41;
          output.data[16] = input.a42;
          output.data[17] = input.a43;
          output.data[18] = input.a44;
          output.data[19] = input.a45;
          output.data[20] = input.a51;
          output.data[21] = input.a52;
          output.data[22] = input.a53;
          output.data[23] = input.a54;
          output.data[24] = input.a55;
  
          return output;
      }