code: public void writeToBuffers(ByteBufferList compQualifier, ByteBufferList compValue) {
      compQualifier.add(qualifier, qualifier_offset, current_qual_length);
      compValue.add(value, value_offset, current_val_length);
    }
docs: Copy this value to the output and advance to the next one.
  
  @param compQualifier
  @param compValue
  @return true if there is more data left in this column