code: def prokka_barplot(self):
          
  
          # Specify the order of the different categories
          keys = OrderedDict()
          keys['CDS'] =           { 'name': 'CDS' }
          keys['rRNA'] =          { 'name': 'rRNA' }
          keys['tRNA'] =          { 'name': 'tRNA' }
          keys['tmRNA'] =         { 'name': 'tmRNA' }
          keys['misc_RNA'] =      { 'name': 'misc RNA' }
          keys['sig_peptide'] =   { 'name': 'Signal peptides' }
          keys['repeat_region'] = { 'name': 'CRISPR array'}
  
          plot_config = {
              'id': 'prokka_plot',
              'title': 'Prokka: Feature Types',
              'ylab': '# Counts',
              'cpswitch_counts_label': 'Features'
          }
  
          return bargraph.plot(self.prokka, keys, plot_config)
docs: Make a basic plot of the annotation stats