diff --git a/ql/src/semmle/go/dataflow/internal/DataFlowPrivate.qll b/ql/src/semmle/go/dataflow/internal/DataFlowPrivate.qll
index db6f3651a4e..091be85e344 100644
--- a/ql/src/semmle/go/dataflow/internal/DataFlowPrivate.qll
+++ b/ql/src/semmle/go/dataflow/internal/DataFlowPrivate.qll
@@ -265,3 +265,14 @@ Node getArgument(CallNode c, int i) {
 
 /** Holds if `n` should be hidden from path explanations. */
 predicate nodeIsHidden(Node n) { none() }
+
+class LambdaCallKind = Unit;
+
+/** Holds if `creation` is an expression that creates a lambda of kind `kind` for `c`. */
+predicate lambdaCreation(Node creation, LambdaCallKind kind, DataFlowCallable c) { none() }
+
+/** Holds if `call` is a lambda call of kind `kind` where `receiver` is the lambda expression. */
+predicate lambdaCall(DataFlowCall call, LambdaCallKind kind, Node receiver) { none() }
+
+/** Extra data-flow steps needed for lambda flow analysis. */
+predicate additionalLambdaFlowStep(Node nodeFrom, Node nodeTo, boolean preservesValue) { none() }