code: def fix_indentation_depth(query):
      
      lines = query.split('\n')
      final_lines = []
  
      for line in lines:
          consecutive_spaces = 0
          for char in line:
              if char == ' ':
                  consecutive_spaces += 1
              else:
                  break
  
          if consecutive_spaces % 2 != 0:
              raise AssertionError(u'Indentation was not a multiple of two: '
                                   u'{}'.format(consecutive_spaces))
  
          final_lines.append(('  ' * consecutive_spaces) + line[consecutive_spaces:])
  
      return '\n'.join(final_lines)
docs: Make indentation use 4 spaces, rather than the 2 spaces GraphQL normally uses.