- some documentation hits

Change-Id: I468fe70168804b08cf0d5e8b57e235bca904b1ff

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/sqlalchemy/ext/declarative/api.py b/lib/sqlalchemy/ext/declarative/api.py
index b2e8b5afe..d02db7aa5 100644
--- a/lib/sqlalchemy/ext/declarative/api.py
+++ b/lib/sqlalchemy/ext/declarative/api.py
@@ -42,6 +42,15 @@ def instrument_declarative(cls, registry, metadata):
 def has_inherited_table(cls):
     """Given a class, return True if any of the classes it inherits from has a
     mapped table, otherwise return False.
+
+    This is used in declarative mixins to build attributes that behave
+    differently for the base class vs. a subclass in an inheritance
+    hierarchy.
+
+    .. seealso::
+
+        :ref:`decl_mixin_inheritance`
+
     """
     for class_ in cls.__mro__[1:]:
         if getattr(class_, '__table__', None) is not None: