code: def _compute_x_labels(self):
      pass
  
file_path: pygal/pygal/graph/solidgauge.py
imports: from math import pi, sqrt
  from pygal.graph.graph import Graph
  from pygal.util import alter, decorate
label_desc: Use image node_id 2 for calling the SolidGauge obj's underlying member method code with example usage: obj._compute_x_labels() without return types