class_docstr: Render context superclass for offscreen and window rendering.
class_docstr_tok: ["Render","context","superclass","for","offscreen","and","window","rendering","."]
code: def add_marker(self, **marker_params):
      self._markers.append(marker_params)
  
imports: import collections
  import os
  import time
  from threading import Lock
  import glfw
  import imageio
  import mujoco
  import numpy
label_desc: Use image node_id 7 for calling the RenderContext obj's underlying member method code with example usage: obj.add_marker() without return types