Added children function for VCS for mercurial backend

rhodecode/lib/vcs/backends/base.py

@@ -395,6 +395,13 b' class BaseChangeset(object):'
         raise NotImplementedError
 
     @LazyProperty
+    def children(self):
+        """
+        Returns list of children changesets.
+        """
+        raise NotImplementedError
+
+    @LazyProperty
     def id(self):
         """
         Returns string identifying this changeset.

rhodecode/lib/vcs/backends/hg/changeset.py

@@ -95,6 +95,14 b' class MercurialChangeset(BaseChangeset):'
         return [self.repository.get_changeset(parent.rev())
                 for parent in self._ctx.parents() if parent.rev() >= 0]
 
+    @LazyProperty
+    def children(self):
+        """
+        Returns list of children changesets.
+        """
+        return [self.repository.get_changeset(child.rev())
+                for child in self._ctx.children() if child.rev() >= 0]
+
     def next(self, branch=None):
 
         if branch and self.branch != branch: