code: def SetValue(self, value):
      #
      # Scan through the value, switching state
      #
      STATE_INITIAL = 0  # Not in a tag
      STATE_BACKSLASH = 1  # At first backslash
      STATE_PRE = 2  # Found either \? or \g
      STATE_INSIDE = 3  # Inside a metadata tag
  
      self.__tokens = []
      state = STATE_INITIAL
      index = 0
      while index < len(value):
          if state == STATE_INITIAL:
              if value[index] == "\\":
                  state = STATE_BACKSLASH
              else:
                  self.__tokens.append(value[index])
          elif state == STATE_BACKSLASH:
              if value[index] in ("g", "?"):
                  state = STATE_PRE
              else:
                  self.__tokens.append(str(value[index]))
                  state = STATE_INITIAL
          elif state == STATE_PRE:
              if value[index] != "<":
                  # WTF? bad input, output last 3 tokens
                  self.__tokens += value[(index - 2) : (index + 1)]
                  state = STATE_INITIAL
              else:
                  self.__tokens += [self.MetadataToken()]
                  state = STATE_INSIDE
          else:
              assert state == STATE_INSIDE
              if value[index] != ">":
                  self.__tokens[-1].value += value[index]
              else:
                  state = STATE_INITIAL
          index += 1
      self.SetMinSize(self.DoGetBestSize())
      self.__cursor_pos = len(self.__tokens)
      self.Cursor = wx.Cursor(wx.CURSOR_IBEAM)
  
imports: import wx
  import wx.lib.masked
  from cellprofiler_core.constants.measurement import C_FRAME
  from cellprofiler_core.constants.measurement import C_METADATA
  from cellprofiler_core.constants.measurement import C_SERIES
  from cellprofiler_core.constants.measurement import IMAGE
  from cellprofiler_core.preferences import get_primary_outline_color
label_desc: Use image node_id 4 for calling the MetadataControl obj's underlying member method code with example usage: obj.SetValue(value) without return types