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# clients
# `prefect.server.events.clients`
## Classes
### `EventsClient`
The abstract interface for a Prefect Events client
**Methods:**
#### `emit`
```python theme={null}
emit(self, event: Event) -> Optional[Event]
```
### `NullEventsClient`
A no-op implementation of the Prefect Events client for testing
**Methods:**
#### `client_name`
```python theme={null}
client_name(self) -> str
```
#### `emit`
```python theme={null}
emit(self, event: Event) -> None
```
#### `emit`
```python theme={null}
emit(self, event: Event) -> None
```
Emit a single event
### `AssertingEventsClient`
An implementation of the Prefect Events client that records all events sent
to it for inspection during tests.
**Methods:**
#### `assert_emitted_event_count`
```python theme={null}
assert_emitted_event_count(cls, count: int) -> None
```
Assert that the given number of events were emitted.
#### `assert_emitted_event_with`
```python theme={null}
assert_emitted_event_with(cls, event: Optional[str] = None, resource: Optional[Dict[str, LabelValue]] = None, related: Optional[List[Dict[str, LabelValue]]] = None, payload: Optional[Dict[str, Any]] = None) -> None
```
Assert that an event was emitted containing the given properties.
#### `assert_no_emitted_event_with`
```python theme={null}
assert_no_emitted_event_with(cls, event: Optional[str] = None, resource: Optional[Dict[str, LabelValue]] = None, related: Optional[List[Dict[str, LabelValue]]] = None, payload: Optional[Dict[str, Any]] = None) -> None
```
#### `client_name`
```python theme={null}
client_name(self) -> str
```
#### `emit`
```python theme={null}
emit(self, event: Event) -> Event
```
#### `emit`
```python theme={null}
emit(self, event: Event) -> None
```
Emit a single event
#### `emitted_events_count`
```python theme={null}
emitted_events_count(cls) -> int
```
#### `reset`
```python theme={null}
reset(cls) -> None
```
Reset all captured instances and their events. For use this between tests
### `PrefectServerEventsClient`
**Methods:**
#### `client_name`
```python theme={null}
client_name(self) -> str
```
#### `emit`
```python theme={null}
emit(self, event: Event) -> ReceivedEvent
```
#### `emit`
```python theme={null}
emit(self, event: Event) -> None
```
Emit a single event
### `PrefectServerEventsAPIClient`
**Methods:**
#### `pause_automation`
```python theme={null}
pause_automation(self, automation_id: UUID) -> httpx.Response
```
#### `resume_automation`
```python theme={null}
resume_automation(self, automation_id: UUID) -> httpx.Response
```
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