FormatterFunc (lib 3.0.0.BETA3 API)

All Known Subinterfaces:

FormatterFunc.Closeable, FormatterFunc.NeedsFile

All Known Implementing Classes:

RdfFormatterFunc

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface FormatterFunc
```
A Function<String, String> which can throw an exception. Technically, there is also a File argument which gets passed around as well, but that is invisible to formatters. If you need the File, see FormatterFunc.NeedsFile.

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static interface`	`FormatterFunc.Closeable`	`Function<String, String>` and `BiFunction<String, File, String>` whose implementation requires a resource which should be released when the function is no longer needed.
`static interface`	`FormatterFunc.NeedsFile`

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`java.lang.String`	`apply(java.lang.String input)`
`default java.lang.String`	`apply(java.lang.String unix, java.io.File file)`
`static FormatterFunc`	`needsFile(FormatterFunc.NeedsFile needsFile)`	Ideally, formatters don't need the underlying file.

- Method Detail
  - apply
```
java.lang.String apply(java.lang.String input)
                throws java.lang.Exception
```
    Throws:
    
    java.lang.Exception
  - apply
```
default java.lang.String apply(java.lang.String unix,
                               java.io.File file)
                        throws java.lang.Exception
```
    Throws:
    
    java.lang.Exception
  - needsFile
```
static FormatterFunc needsFile(FormatterFunc.NeedsFile needsFile)
```
    Ideally, formatters don't need the underlying file. But in case they do, they should only use it's path, and should never read the content inside the file, because that breaks the Function<String, String> composition that Spotless is based on. For the rare case that you need access to the file, use this method or FormatterFunc.NeedsFile to create a FormatterFunc which needs the File.