Rename predicate with snake cased name

Author: aibaars

ql/test/library-tests/dataflow/api-graphs/use.ql

@@ -8,18 +8,18 @@ class ApiUseTest extends InlineExpectationsTest {
 
   override string getARelevantTag() { result = "use" }
 
-  private predicate relevant_node(API::Node a, DataFlow::Node n, Location l) {
+  private predicate relevantNode(API::Node a, DataFlow::Node n, Location l) {
     n = a.getAUse() and
     l = n.getLocation()
   }
 
   override predicate hasActualResult(Location location, string element, string tag, string value) {
-    exists(API::Node a, DataFlow::Node n | relevant_node(a, n, location) |
+    exists(API::Node a, DataFlow::Node n | relevantNode(a, n, location) |
       tag = "use" and
       // Only report the longest path on this line:
       value =
         max(API::Node a2, Location l2, DataFlow::Node n2 |
-          relevant_node(a2, n2, l2) and
+          relevantNode(a2, n2, l2) and
           l2.getFile() = location.getFile() and
           l2.getStartLine() = location.getStartLine()
         |