List of the fixed warning types:
warning: [ClassCanBeStatic] Inner class is non-static but does not reference enclosing class
warning: [AlmostJavadoc] This comment contains Javadoc or HTML tags, but isn't started with a double asterisk
warning: [EmptyBlockTag] A block tag (@param, @return, @throws, @deprecated) has an empty description. Block tags without descriptions don't add much value for future readers of the code; consider removing the tag entirely or adding a description.
warning: [ObjectToString] DisplayAd is final and does not override Object.toString, so converting it to a string will print its identity (e.g. `DisplayAd@4488aabb`) instead of useful information.
Artem Samoilenko
11fb643838