Argument (args4j parent 2.33 API)

```
@Retention(RUNTIME)
@Target({FIELD,METHOD,PARAMETER})
public @interface Argument
```
Argument of the command line. This works mostly like Option except the following differences.
1. Arguments have an index about their relative position on the command line.
Author:

Kohsuke Kawaguchi, Mark Sinke

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`java.lang.Class<? extends OptionHandler>`	`handler`	See `Option.handler()`.
`boolean`	`hidden`	See `Option.hidden()`.
`int`	`index`	Position of the argument.
`java.lang.String`	`metaVar`	See `Option.metaVar()`.
`boolean`	`multiValued`
`boolean`	`required`	See `Option.required()`.
`java.lang.String`	`usage`	See `Option.usage()`.

- Element Detail
  - usage
```
java.lang.String usage
```
    See Option.usage().
    
    Default:
    
    ""
- - metaVar
```
java.lang.String metaVar
```
    See Option.metaVar().
    
    Default:
    
    ""
- - required
```
boolean required
```
    See Option.required().
    
    Default:
    
    false
- - hidden
```
boolean hidden
```
    See Option.hidden().
    
    Default:
    
    false
- - handler
```
java.lang.Class<? extends OptionHandler> handler
```
    See Option.handler().
    
    Default:
    
    org.kohsuke.args4j.spi.OptionHandler.class
- - index
```
int index
```
    Position of the argument.
    If you define multiple single value properties to bind to arguments, they should have index=0, index=1, index=2, ... and so on.
    Multi value properties bound to arguments must be always the last entry.
    
    Default:
    
    0
- - multiValued
```
boolean multiValued
```
    Default:
    
    false