Controls the Jalopy message output.
Given the sensitive nature of automatic source code processing, it is quite
important to keep informed about what is going on during the formatting process.
The default configuration should be sufficient for most users, so there should
seldom arise the need to change anything here.
Jalopy provides different message categories for setting verbosity level.
Changing the threshold from ERROR to DEBUG
successively displays more (albeit not necessarily more useful) messages.
General purpose chain for I/O activity and all sorts of stuff that doesn't fit
Message chain for messages related to the Java language parser.
Message chain for messages related to the parsing of Javadoc comments.
Message chain for messages related to the post-processing of the generated AST.
Message chain for the main printing engine.
Message chain for Javadoc printing related messages.