Made getProeprties() throw an exception on error

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@272256 13f79535-47bb-0310-9956-ffa450edef68

proposal/myrmidon/src/java/org/apache/myrmidon/api/TaskContext.java

@@ -55,7 +55,8 @@ public interface TaskContext
      *
      * @return the map of all property names to values
      */
-    Map getProperties();
+    Map getProperties()
+        throws TaskException;
 
     /**
      * Retrieve a service that is offered by the runtime.