86 def _might_match_adjacent(block, ctx, ctx_set, descendant_labels):  argument
89         if elem not in descendant_labels:
120     def might_match(self, ctx, ctx_set, descendant_labels):  argument
124                                              descendant_labels):
138     def is_irrelevant(self, ctx, ctx_set, descendant_labels):  argument
142     def requires_action(self, ctx, ctx_set, descendant_labels):  argument
143         return not self.might_match(ctx, ctx_set, descendant_labels)
147                    descendant_labels):  argument
152                     return self.might_match(ctx, ctx_set, descendant_labels)
157     def is_irrelevant(self, ctx, ctx_set, descendant_labels):  argument
158         return not self.might_match(ctx, ctx_set, descendant_labels)
161     def requires_action(self, ctx, ctx_set, descendant_labels):  argument
166                    descendant_labels):  argument