Separate Pipeline type inference/checking & MRC pipeline construction

morpheus/pipeline/receiver.py

@@ -78,7 +78,7 @@ def get_input_node(self, builder: mrc.Builder) -> mrc.SegmentObject:
         Returns the input or parent node.
         """
 
-        assert self.is_partial, "Must be partially complete to get the input pair!"
+        assert self.is_partial, "Must be partially complete to get the input node!"
 
         # Build the input from the senders
         if (self._input_node is None):