@staticmethod
def near(lat, lng, max_dist=None, unit_miles=False):
    """Find document near a point.

        For example:: find all document with in 25 miles radius from 32.0, -73.0.
        """
    filters = {'$nearSphere': {'$geometry': {'type': 'Point', 'coordinates':
        [lng, lat]}}}
    if max_dist:
        if unit_miles:
            max_dist = max_dist / 1609.344
        filters['$nearSphere']['$maxDistance'] = max_dist
    return filters
