Describes different levels of log information the Package Manager supports.
| Error | Only unexpected errors and failures are logged. | 
| Warn | Abnormal situations that may result in problems are reported, in addition to anything from the LogLevel.Error level. | 
| Info | High-level informational messages are reported, in addition to anything from the LogLevel.Warn level. | 
| Verbose | Detailed informational messages are reported, in addition to anything from the LogLevel.Info level. | 
| Debug | Debugging messages are reported, in addition to anything from the LogLevel.Verbose level. | 
| Silly | Extremely detailed messages are reported, in addition to anything from the LogLevel.Debug level. |