THRIFT-2637 "java:fullcamel_service_methods" option to automatically camel-case Java service methods

Patch: Tom Lee
diff --git a/test/DenseLinkingTest.thrift b/test/DenseLinkingTest.thrift
index f18234b..3a5b957 100644
--- a/test/DenseLinkingTest.thrift
+++ b/test/DenseLinkingTest.thrift
@@ -91,3 +91,8 @@
 service Srv {
   i32 Janky(1: i32 arg)
 }
+
+service UnderscoreSrv {
+  i64 some_rpc_call(1: string message)
+}
+