VersionCache (exiftool 2.6.0 API)

```
public interface VersionCache
```
Parse exiftool version and put it in a cache.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`clear()`	Invalidate all entries.
`Version`	`load(String exifTool, CommandExecutor executor)`	Execute `exiftool` using given `executor` to get version of `exiftool` executable and put results in a cache.
`long`	`size()`	Get current size of cache (a.k.a number of entries).

- Method Detail
  - load
```
Version load(String exifTool,
             CommandExecutor executor)
```
    Execute exiftool using given executor to get version of exiftool executable and put results in a cache.
    
    Parameters:
    
    exifTool - Path of exiftool executable.
    
    executor - Executor used to execute exiftool command.
    
    Returns:
    
    Version, null if version cannot be parsed.
  - size
```
long size()
```
    Get current size of cache (a.k.a number of entries).
    
    Returns:
    
    Cache Size.
  - clear
```
void clear()
```
    Invalidate all entries.