Hi, I can't send mail message with attachment. I use exact same code as in unit tests: https://github.com/microsoftgraph/msgraph-sdk-java/pull/202/files#diff-ca39247b233dfb60518f697e16243541R124.
I get NoSuchMethodException at CollectionPageSerializer class, line 84.
java.lang.NoSuchMethodError: 'com.google.gson.JsonElement com.google.gson.JsonParser.parseString(java.lang.String)'.
In JsonParser class, there's no parseString method. There's only parse(String json).