code: def _handle_header(self, sline):
          
          # All characters UPPER CASE means it is a Section.
          if sline[0].isupper():
              self._cur_section = sline[0]
              self._cur_sub_section = ''
              return 0
          else:
              self._cur_sub_section = sline[0]
              if sline[0] == SUBSECTION_ANALYTE_RESULT:
                  # This is Analyte Result Line, next line will be headers of
                  # results table
                  self._is_header_line = True
                  return 0
              elif sline[0] in ('Detail', 'Errors', 'Messages'):
                  # It is end of Analyte Result sub-section. Add the last
                  # record as a raw result and reset everything.
                  self._submit_result()
                  return 0
docs: A function for lines with only ONE COLUMN.
          If line has only one column, then it is either a Section or
          Subsection name.