tmf: Null-annotate state system API classes

[deliverable/tracecompass.git] / org.eclipse.tracecompass.tmf.core / src / org / eclipse / tracecompass / tmf / core / statesystem / ITmfStateProvider.java

diff --git a/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/statesystem/ITmfStateProvider.java b/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/statesystem/ITmfStateProvider.java
index c355b470f6f6d062cb8da487e1f16121ff6f6736..1441c6012b8e7288c4f26e6c7ffbcdb67aad9d65 100644 (file)
--- a/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/statesystem/ITmfStateProvider.java
+++ b/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/statesystem/ITmfStateProvider.java
@@ -12,6 +12,7 @@
 
 package org.eclipse.tracecompass.tmf.core.statesystem;
 
+import org.eclipse.jdt.annotation.Nullable;
 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem;
 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder;
 import org.eclipse.tracecompass.tmf.core.event.ITmfEvent;
@@ -88,7 +89,7 @@ public interface ITmfStateProvider {
      *         SS is assigned yet
      * @since 3.0
      */
-    ITmfStateSystem getAssignedStateSystem();
+    @Nullable ITmfStateSystem getAssignedStateSystem();
 
     /**
      * Send an event to this input plugin for processing. The implementation