code: def process_data(self, data):
          
          if isinstance(data, dict):
              self.embed = True
              return data
          elif isinstance(data, str):
              if data.lower().startswith(('http:', 'ftp:', 'https:')):
                  if not self.embed:
                      self.embed_link = data
                  return requests.get(data).json()
              elif data.lstrip()[0] in '[{':  # This is a GeoJSON inline string
                  self.embed = True
                  return json.loads(data)
              else:  # This is a filename
                  if not self.embed:
                      self.embed_link = data
                  with open(data) as f:
                      return json.loads(f.read())
          elif hasattr(data, '__geo_interface__'):
              self.embed = True
              if hasattr(data, 'to_crs'):
                  data = data.to_crs(epsg='4326')
              return json.loads(json.dumps(data.__geo_interface__))
          else:
              raise ValueError('Cannot render objects with any missing geometries'
                               ': {!r}'.format(data))
docs: Convert an unknown data input into a geojson dictionary.