Add EVIDENCE_DESCRIPTION property to FINDING nodes.

Author: ml86

schema/src/main/scala/io/shiftleft/codepropertygraph/schema/Finding.scala

@@ -54,11 +54,23 @@ object Finding extends SchemaBase {
       .protoId(ProtoIds.KeyValuePair)
       .addProperties(key, value)
 
-// node relations
+    val evidenceDescription = builder
+      .addProperty(
+        name = "EVIDENCE_DESCRIPTION",
+        valueType = ValueType.String,
+        comment =
+          """Optional description for nodes in evidence. Used to give a hint about the kind of evidence
+            |provided by a node. The evidence description and evidence nodes are associated by index.
+            |""".stripMargin
+      )
+      .asList
+      .protoId(ProtoIds.EvidenceDescription)
+
+    // node relations
     finding
       .addContainedNode(builder.anyNode, "evidence", Cardinality.List)
       .addContainedNode(keyValuePair, "keyValuePairs", Cardinality.List)
-
+      .addProperty(evidenceDescription)
 // constants
 
   }

schema/src/main/scala/io/shiftleft/codepropertygraph/schema/ProtoIds.scala

@@ -171,4 +171,5 @@ object ProtoIds {
   val FieldIdentifier           = 2001081
   val CanonicalName             = 2001092
   val ContainedRef              = 2007161
+  val EvidenceDescription       = 2007162
 }