docs: def _get_matrix(self):
          """
          Build a matrix of scenarios with sequence to include and returns a
          dict.
  
          {
              scenario_1: {
                  'subcommand': [
                      'action-1',
                      'action-2',
                  ],
              },
              scenario_2: {
                  'subcommand': [
                      'action-1',
                  ],
              },
          }
  
          :returns: dict
          """
          return dict({
              scenario.name: {
                  'check': scenario.check_sequence,
                  'cleanup': scenario.cleanup_sequence,
                  'converge': scenario.converge_sequence,
                  'create': scenario.create_sequence,
                  'dependency': scenario.dependency_sequence,
                  'destroy': scenario.destroy_sequence,
                  'idempotence': scenario.idempotence_sequence,
                  'lint': scenario.lint_sequence,
                  'prepare': scenario.prepare_sequence,
                  'side_effect': scenario.side_effect_sequence,
                  'syntax': scenario.syntax_sequence,
                  'test': scenario.test_sequence,
                  'verify': scenario.verify_sequence,
              }
              for scenario in self.all
          })