> ## Documentation Index
> Fetch the complete documentation index at: https://docs.prefect.io/llms.txt
> Use this file to discover all available pages before exploring further.
# labelling
# `prefect.server.events.schemas.labelling`
## Classes
### `LabelDiver`
The LabelDiver supports templating use cases for any Labelled object, by
presenting the labels as a graph of objects that may be accessed by attribute. For
example:
```python theme={null}
diver = LabelDiver({
'hello.world': 'foo',
'hello.world.again': 'bar'
})
assert str(diver.hello.world) == 'foo'
assert str(diver.hello.world.again) == 'bar'
```
### `Labelled`
**Methods:**
#### `as_label_value_array`
```python theme={null}
as_label_value_array(self) -> List[Dict[str, str]]
```
#### `get`
```python theme={null}
get(self, label: str, default: Optional[str] = None) -> Optional[str]
```
#### `has_all_labels`
```python theme={null}
has_all_labels(self, labels: Dict[str, str]) -> bool
```
#### `items`
```python theme={null}
items(self) -> Iterable[Tuple[str, str]]
```
#### `keys`
```python theme={null}
keys(self) -> Iterable[str]
```
#### `labels`
```python theme={null}
labels(self) -> LabelDiver
```