parameters: (self, qtpath, channel, layer_id)
return_statement: return self.ReadMapDataPacket(
          qtpath, glc_unpacker.kImagePacket, channel, layer_id)
docstring: Returns imagery packet at given address.
  
      If imagery packet is not found, throws an exception.
  
      Args:
        qtpath: the quadtree node of the map imagery packet.
        channel: the channel of the map imagery packet.
        layer_id: id of layer in the composite globe.
      Returns:
        The map imagery packet itself.
docstring_summary: Returns imagery packet at given address.
docstring_tokens: Returns imagery packet at given address .
function: def ReadMapImageryPacket(self, qtpath, channel, layer_id):
      """Returns imagery packet at given address.
  
      If imagery packet is not found, throws an exception.
  
      Args:
        qtpath: the quadtree node of the map imagery packet.
        channel: the channel of the map imagery packet.
        layer_id: id of layer in the composite globe.
      Returns:
        The map imagery packet itself.
      """
      return self.ReadMapDataPacket(
          qtpath, glc_unpacker.kImagePacket, channel, layer_id)
function_tokens: def ReadMapImageryPacket ( self , qtpath , channel , layer_id ) : return self . ReadMapDataPacket ( qtpath , glc_unpacker . kImagePacket , channel , layer_id )