code: def time_fast_kde_normal(self, numba_flag, n):
      kde(self.x)
  
imports: import numpy
  from scipy.stats import circstd
  import arviz
  from arviz.stats.density_utils import _fast_kde_2d, histogram, kde
  from arviz.stats.stats_utils import _circular_standard_deviation, stats_variance_2d
label_desc: Use image node_id 2 for calling the Kde_1d obj's underlying member method code with example usage: obj.time_fast_kde_normal(numba_flag, n) without return types