code: @Override
      protected final int serializeBytes1to3 () {
  
          int line = status.value();
          line |= response.value() << Constants.ONE_BYTE_SHIFT;
  
          if (residualUnderflow) {
              line |= Constants.RESIDUAL_UNDERFLOW_FLAG_MASK;
          }
  
          if (residualOverflow) {
              line |= Constants.RESIDUAL_OVERFLOW_FLAG_MASK;
          }
  
          if (bidirectionalReadResidualUnderflow) {
              line |= Constants.READ_RESIDUAL_UNDERFLOW_FLAG_MASK;
          }
  
          if (bidirectionalReadResidualOverflow) {
              line |= Constants.READ_RESIDUAL_OVERFLOW_FLAG_MASK;
          }
  
          return line;
      }
docs: {@inheritDoc}