Debug prints a debugging log message.

Debugf formats a debugging log message.

Error prints an error log message.

Errorf formats an error log message.

Info prints an informational log message.

Infof formats an informational log message.

SetMinLevel sets the minimum level to include in the logging output.

Warn prints a warning log message.

Warnf formats a warning log message.

Level is the severity level of a log message.