```
@ProviderType
public interface Logger
```
This is a stripped down copy of the LogService 1.4 API (R7). It's trimmed down to the methods used by the optional support for R7 logging.

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`debug(String message)`
`void`	`debug(String format, Object arg)`
`void`	`error(String message)`
`void`	`error(String format, Object arg)`
`void`	`info(String message)`
`void`	`info(String format, Object arg)`
`boolean`	`isDebugEnabled()`
`boolean`	`isErrorEnabled()`
`boolean`	`isInfoEnabled()`
`boolean`	`isWarnEnabled()`
`void`	`warn(String message)`
`void`	`warn(String format, Object arg)`

void debug(String format,
           Object arg)

void info(String format,
          Object arg)

void warn(String format,
          Object arg)

void error(String format,
           Object arg)

Interface Logger