code: def calculate_pval_bonferroni_cutoff(df, cutoff=0.05):
      bonferroni_p = cutoff / df.count()
      return bonferroni_p
  
label_desc: Use image node_id 3 for calling a global function with example usage: calculate_pval_bonferroni_cutoff(df, cutoff) and returns: bonferroni_p