1 files changed, 14 insertions, 2 deletions
diff --git a/jython-tosca-parser/src/main/java/org/openecomp/sdc/toscaparser/api/SubstitutionMappings.java b/jython-tosca-parser/src/main/java/org/openecomp/sdc/toscaparser/api/SubstitutionMappings.java
index 526a0e3..30de2a8 100644
--- a/jython-tosca-parser/src/main/java/org/openecomp/sdc/toscaparser/api/SubstitutionMappings.java
+++ b/jython-tosca-parser/src/main/java/org/openecomp/sdc/toscaparser/api/SubstitutionMappings.java
@@ -2,12 +2,15 @@ package org.openecomp.sdc.toscaparser.api;
 
 import static com.google.common.collect.ImmutableList.toImmutableList;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
 
 import org.openecomp.sdc.toscaparser.api.elements.NodeType;
 import org.openecomp.sdc.toscaparser.api.parameters.Input;
+import org.openecomp.sdc.toscaparser.jython.JyGroup;
 import org.openecomp.sdc.toscaparser.jython.JySubstitutionMappings;
+import org.openecomp.sdc.toscaparser.jython.parameters.JyInput;
 
 import com.google.common.base.MoreObjects;
 
@@ -25,12 +28,21 @@ public class SubstitutionMappings {
                 .map(NodeTemplate::new)
                 .collect(toImmutableList());
     }
+    
+    public List<Group> getGroups() {
+        List<JyGroup> jyGroups = jySubstitutionMappings.getJyGroups();
+		return jyGroups != null ? jyGroups
+                .stream()
+                .map(Group::new)
+                .collect(toImmutableList()) : new ArrayList<>();
+    }
 
     public List<Input> getInputs() {
-        return jySubstitutionMappings.getJyInputs()
+        List<JyInput> jyInputs = jySubstitutionMappings.getJyInputs();
+		return jyInputs != null ? jyInputs
                 .stream()
                 .map(Input::new)
-                .collect(toImmutableList());
+                .collect(toImmutableList()) : new ArrayList<>();
     }
 
     public NodeType getNodeDefinition() {