Get rid of get_parent_until.

jedi/api/classes.py

@@ -669,7 +669,7 @@ class CallSignature(Definition):
            Use :attr:`.module_name` for the module name.
         .. todo:: Remove!
         """
-        return self._executable.get_parent_until()
+        return self._executable.get_root_node()
 
     def __repr__(self):
         return '<%s: %s index %s>' % \

jedi/api/completion.py

@@ -235,7 +235,7 @@ class Completion:
         Autocomplete inherited methods when overriding in child class.
         """
         leaf = self._module_node.get_leaf_for_position(self._position, include_prefixes=True)
-        cls = leaf.get_parent_until(tree.Class)
+        cls = tree.search_ancestor(leaf, 'classdef')
         if isinstance(cls, (tree.Class, tree.Function)):
             # Complete the methods that are defined in the super classes.
             random_context = self._module_context.create_context(

jedi/api/helpers.py

@@ -299,7 +299,7 @@ def cache_call_signatures(evaluator, context, bracket_leaf, code_lines, user_pos
     whole = '\n'.join(other_lines + [before_cursor])
     before_bracket = re.match(r'.*\(', whole, re.DOTALL)
 
-    module_path = bracket_leaf.get_parent_until().path
+    module_path = bracket_leaf.get_root_node().path
     if module_path is None:
         yield None  # Don't cache!
     else:

jedi/api/keywords.py

@@ -90,9 +90,6 @@ class Keyword(object):
         self.start_pos = pos
         self.parent = evaluator.BUILTINS
 
-    def get_parent_until(self):
-        return self.parent
-
     @property
     def only_valid_as_leaf(self):
         return self.name.value in keywords_only_valid_as_leaf