add checkError

inca-translation/solutions/SumTypes_Checker/models/model.mps

@@ -19,6 +19,9 @@
   </imports>
   <registry>
     <language id="8c9a2720-9d21-4370-a226-819eb3e76e1e" name="org.inca.fun">
+      <concept id="5746856838774042406" name="org.inca.fun.structure.Def" flags="ng" index="2dT$3Y">
+        <child id="5746856838774042549" name="expression" index="2dT$1H" />
+      </concept>
       <concept id="996292992024530460" name="org.inca.fun.structure.PatternFunctionCall" flags="ng" index="2k1GkI">
         <child id="996292992028393460" name="call" index="2nKVj6" />
       </concept>
@@ -1719,6 +1722,59 @@
       </node>
     </node>
     <node concept="1XdyHe" id="5nh18u9fHnw" role="1dubk0" />
+    <node concept="3zyOaB" id="3LD9l6bMfWV" role="1dubk0">
+      <property role="TrG5h" value="checkError" />
+      <node concept="3zV_Rz" id="3LD9l6bMfWW" role="3zVECS">
+        <node concept="19sAKZ" id="3LD9l6bMjpq" role="1dgzf0">
+          <node concept="30KbLJ" id="3LD9l6bMjpr" role="19sVOa">
+            <property role="TrG5h" value="term" />
+          </node>
+          <node concept="19NcOt" id="3LD9l6bMjqe" role="19sVOf">
+            <node concept="2kdjtB" id="3LD9l6bMjqc" role="19NcOs">
+              <ref role="2UGuZ7" to="xkot:1Da9ityUTbh" resolve="Term" />
+            </node>
+          </node>
+          <node concept="CU8gp" id="3LD9l6bMjpt" role="19sVO2">
+            <node concept="34ocy7" id="3LD9l6bMjqL" role="1dgzf0">
+              <node concept="2dT$3Y" id="3LD9l6bMjrk" role="34ocs8">
+                <node concept="2k1GkI" id="3LD9l6bMjsg" role="2dT$1H">
+                  <node concept="2k1_uq" id="3LD9l6bMjse" role="2nKVj6">
+                    <ref role="2nKBpL" node="5nh18u8IaY1" resolve="required" />
+                    <node concept="30NkWi" id="3LD9l6bMjsN" role="2nKBpO">
+                      <ref role="XkjO9" node="3LD9l6bMjpr" resolve="term" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="34ocy7" id="3LD9l6bMlG_" role="1dgzf0">
+              <node concept="34sUYq" id="3LD9l6bMlHV" role="34ocs8">
+                <node concept="2k1GkI" id="3LD9l6bMlJb" role="34sUSb">
+                  <node concept="2k1_uq" id="3LD9l6bMlJ9" role="2nKVj6">
+                    <ref role="2nKBpL" node="6JCho9VDhNF" resolve="check" />
+                    <node concept="30NkWi" id="3LD9l6bMlK8" role="2nKBpO">
+                      <ref role="XkjO9" node="3LD9l6bMjpr" resolve="term" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="Muu81" id="3LD9l6bModL" role="1dgzf0">
+              <node concept="MupYM" id="3LD9l6bMofZ" role="Muu86" />
+              <node concept="30NkWi" id="3LD9l6bMohI" role="Muu87">
+                <ref role="XkjO9" node="3LD9l6bMjpr" resolve="term" />
+              </node>
+              <node concept="MuuBa" id="3LD9l6bModP" role="Muu84">
+                <node concept="Mu3nt" id="3LD9l6bMojL" role="MuuBj">
+                  <property role="Mu3ny" value="check failed" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="1XdyHe" id="3LD9l6bM99s" role="1dubk0" />
     <node concept="C6Zt3" id="6JCho9VDhCo" role="xaH5_">
       <ref role="ws7DW" node="6JCho9VD4ev" resolve="LType" />
     </node>