code: public static SimpleMatrix convertSimple( DMatrixRBlock A ) {
          DMatrixRMaj B = ConvertDMatrixStruct.convert(A, null);
  
          return SimpleMatrix.wrap(B);
      }
docs: <p>Converts the block matrix into a SimpleMatrix.</p>
  
  @param A Block matrix that is being converted.  Not modified.
  @return Equivalent SimpleMatrix.