Advice.Argument

```
@Documented
@Retention(RUNTIME)
@Target(PARAMETER)
public static @interface Advice.Argument
```
Indicates that the annotated parameter should be mapped to the parameter with index value() of the instrumented method.

Important: Don't confuse this annotation with Argument or MemberSubstitution.Argument. This annotation should be used only in combination with Advice.

See Also:

Advice, Advice.OnMethodEnter, Advice.OnMethodExit

Required Element Summary

Required Elements
Modifier and Type Required Element Description

int value
Returns the index of the mapped parameter.

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`boolean`	`optional`	Indicates if a parameter binding is optional.
`boolean`	`readOnly`	Indicates if it is possible to write to this parameter.
`Assigner.Typing`	`typing`	The typing that should be applied when assigning the argument.

- Element Detail
  - value
```
int value
```
    Returns the index of the mapped parameter.
    
    Returns:
    
    The index of the mapped parameter.
- - readOnly
```
boolean readOnly
```
    Indicates if it is possible to write to this parameter. If this property is set to false, the annotated type must be equal to the type declaring the instrumented method if the typing is not also set to Assigner.Typing.DYNAMIC. If this property is set to true, the annotated parameter can be any super type of the instrumented method's declaring type.
    
    Important: This property must be set to true if the advice method is not inlined.
    
    Returns:
    
    true if this parameter is read-only.
    
    Default:
    
    true
- - typing
```
Assigner.Typing typing
```
    The typing that should be applied when assigning the argument.
    
    Returns:
    
    The typing to apply upon assignment.
    
    Default:
    
    net.bytebuddy.implementation.bytecode.assign.Assigner.Typing.STATIC
- - optional
```
boolean optional
```
    Indicates if a parameter binding is optional. If a binding is optional and a parameter with the specified index does not exist, the parameter's default value is bound.
    
    Returns:
    
    true if the binding is optional.
    
    Default:
    
    false