code: def forward(
      self,
      rays_o,
      rays_d,
      mvp,
      h,
      w,
      staged=False,
      max_ray_batch=4096,
      step=None,
      **kwargs,
  ):
      return self._render(
          rays_o=rays_o, rays_d=rays_d, step=step, **kwargs
      )
  
file_path: NeMo/nemo/collections/multimodal/modules/nerf/renderers/nerfacc_volume_renderer.py
imports: import collections
  from typing import Optional
  import torch
  from nerfacc.estimators.occ_grid import OccGridEstimator
  from nerfacc.grid import ray_aabb_intersect, traverse_grids
  from nerfacc.volrend import accumulate_along_rays_, render_weight_from_density, rendering
  from nemo.collections.multimodal.modules.renderer.base_renderer import BaseRenderer
label_desc: Use image node_id 3 for calling the NerfaccVolumeBaseRenderer obj's underlying member method code with example usage: obj.forward(rays_o, rays_d, mvp, h, w, staged, max_ray_batch, step) and returns: self