code: def get_default_config(self):
          
          config = super(ProcessResourcesCollector, self).get_default_config()
          config.update({
              'info_keys': ['num_ctx_switches', 'cpu_percent', 'cpu_times',
                            'io_counters', 'num_threads', 'num_fds',
                            'memory_percent', 'memory_info_ex', ],
              'path': 'process',
              'unit': 'B',
              'process': {},
          })
          return config
docs: Default settings are:
              info_keys: ['num_ctx_switches', 'cpu_percent', 'cpu_times',
                          'io_counters', 'num_threads', 'num_fds',
                          'memory_percent', 'memory_info_ex', ]
              path: 'process'
              unit: 'B'