UserProperties (HiveMQ Extension SDK 4.28.1 API)

All Known Subinterfaces:

ModifiableUserProperties
```
@DoNotImplement
public interface UserProperties
```
The user properties of an MQTT packet.

Since:

4.0.0, CE 2019.1

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`@Immutable @NotNull List<@NotNull UserProperty>`	`asList()`
`@Immutable @NotNull List<@NotNull String>`	`getAllForName(@NotNull String name)`
`@NotNull Optional<String>`	`getFirst(@NotNull String name)`
`boolean`	`isEmpty()`

- Method Detail
  - getFirst
```
@NotNull Optional<String> getFirst(@NotNull String name)
```
    Parameters:
    
    name - The name of the user property to get.
    
    Returns:
    
    An Optional that contains the first user property with the specified name.
    
    Since:
    
    4.0.0, CE 2019.1
  - getAllForName
```
@Immutable
@NotNull
@Immutable @NotNull List<@NotNull String> getAllForName(@NotNull String name)
```
    Parameters:
    
    name - The name of the user properties to get.
    
    Returns:
    
    The values user property with the specified name.
    
    Since:
    
    4.0.0, CE 2019.1
  - asList
```
@Immutable
@NotNull
@Immutable @NotNull List<@NotNull UserProperty> asList()
```
    Returns:
    
    A list of all UserPropertys.
    
    Since:
    
    4.0.0, CE 2019.1
  - isEmpty
```
boolean isEmpty()
```
    Returns:
    
    true if no user properties are present, else false.
    
    Since:
    
    4.0.0, CE 2019.1