Update wording on SimpleReader.child_readers. Rename 'child_readers' to simply 'children'.

Author: jaraco

importlib_resources/abc.py

@@ -129,10 +129,10 @@ def package(self):
         """
 
     @abc.abstractmethod
-    def child_readers(self) -> List['SimpleReader']:
+    def children(self) -> List['SimpleReader']:
         """
-        Obtain an iterable of ResourceReader for available
-        child virtual packages of this one.
+        Obtain an iterable of SimpleReader for available
+        child containers (e.g. directories).
         """
 
     @abc.abstractmethod
@@ -214,7 +214,7 @@ def iterdir(self):
             ResourceHandle(self, name)
             for name in self.resources
             )
-        dirs = map(ResourceContainer, self.child_readers())
+        dirs = map(ResourceContainer, self.children())
         return itertools.chain(files, dirs)
 
     def open(self, *args, **kwargs):