--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/service/collector/stubs/rdfdb/patch.pyi	Fri Apr 19 01:07:29 2019 -0700
@@ -0,0 +1,40 @@
+# Stubs for rdfdb.patch (Python 3)
+#
+
+# these should move into patch.py itself, but I'm keeping it py2-friendly for now
+
+import unittest
+from typing import Any, Optional, Iterable, Dict, Collection, Tuple
+from rdflib import StatementType
+from rdflib.term import Node, URIRef
+from rdflib.graph import ConjunctiveGraph
+
+
+def quadsWithContextUris(quads: Any) -> None: ...
+
+class Patch:
+    def __init__(self,
+                 jsonRepr: Optional[Any] = ...,
+                 addQuads: Optional[Iterable[StatementType]] = ...,
+                 delQuads: Optional[Iterable[StatementType]] = ...,
+                 addGraph: Optional[ConjunctiveGraph] = ...,
+                 delGraph: Optional[ConjunctiveGraph] = ...): ...
+    def shortSummary(self) -> str: ...
+    @classmethod
+    def fromDiff(cls, oldGraph: ConjunctiveGraph, newGraph: ConjunctiveGraph) -> Patch: ...
+    def __nonzero__(self) -> bool: ...
+    @property
+    def addQuads(self) -> Collection[StatementType]: ...
+    @property
+    def delQuads(self) -> Collection[StatementType]: ...
+    @property
+    def addGraph(self) -> ConjunctiveGraph: ...
+    @property
+    def delGraph(self) -> ConjunctiveGraph: ...
+    @property
+    def jsonRepr(self) -> str: ...
+    def makeJsonRepr(self, extraAttrs: Optional[Dict]) -> str: ...
+    def simplify(self) -> Patch: ...
+    def concat(self, more: Iterable[Patch]) -> Patch: ...
+    def getContext(self) -> URIRef: ...
+    def isNoop(self) -> bool: ...