code: def _preprocess(self, lhs, rhs):
      # A polygon covers a linestring if all of the points in the linestring
      # are in the interior or exterior of the polygon. This differs from
      # a polygon that contains a linestring in that some point of the
      # linestring must be in the interior of the polygon.
      # Count the number of points from rhs in the interior of lhs
      contains_count = _basic_contains_count(lhs, rhs)
      # Now count the number of points from rhs in the boundary of lhs
      pli = _basic_intersects_pli(lhs, rhs)
      intersections = pli[1]
      # There may be no intersection, so start with _zero_series
      equality = _zero_series(len(rhs))
      if len(intersections) > 0:
          matching_length_multipoints = (
              _points_and_lines_to_multipoints(intersections, pli[0])
          )
          equality = _basic_equals_count(
              matching_length_multipoints, rhs
          )
      covers = contains_count + equality >= rhs.sizes
      return covers
  
file_path: cuspatial/python/cuspatial/cuspatial/core/binpreds/feature_covers.py
imports: from cuspatial.core.binpreds.basic_predicates import _basic_contains_any, _basic_contains_count, _basic_equals_count, _basic_intersects_pli
  from cuspatial.core.binpreds.binpred_interface import BinPred, ImpossiblePredicate, NotImplementedPredicate
  from cuspatial.core.binpreds.feature_equals import EqualsPredicateBase
  from cuspatial.core.binpreds.feature_intersects import LineStringPointIntersects
  from cuspatial.utils.binpred_utils import LineString, MultiPoint, Point, Polygon, _points_and_lines_to_multipoints, _zero_series
label_desc: Use image node_id 1 for calling the PolygonLineStringCovers obj's underlying member method code with example usage: obj._preprocess(lhs, rhs) and returns: covers