diff --git a/spacy/tokens/binder.pyx b/spacy/tokens/binder.pyx
new file mode 100644
index 000000000..0ee168579
--- /dev/null
+++ b/spacy/tokens/binder.pyx
@@ -0,0 +1,21 @@
+cdef class Binder:
+    def __init__(self, *docs):
+        pass
+
+    def __iter__(self):
+        pass
+
+    def __reduce__(self):
+        pass
+
+    def to_bytes(self):
+        pass
+
+    def from_bytes(cls, data):
+        pass
+
+    def to_disk(self):
+        pass
+
+    def from_disk(self, path):
+        pass