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# __init__
# `prefect.server.events.storage`
## Functions
### `to_page_token`
```python theme={null}
to_page_token(filter: 'EventFilter', count: int, page_size: int, current_offset: int) -> Optional[str]
```
### `from_page_token`
```python theme={null}
from_page_token(page_token: str) -> Tuple['EventFilter', int, int, int]
```
### `process_time_based_counts`
```python theme={null}
process_time_based_counts(filter: 'EventFilter', time_unit: TimeUnit, time_interval: float, counts: List[EventCount]) -> List[EventCount]
```
Common logic for processing time-based counts across different event backends.
When doing time-based counting we want to do two things:
1. Backfill any missing intervals with 0 counts.
2. Update the start/end times that are emitted to match the beginning and
end of the intervals rather than having them reflect the true max/min
occurred time of the events themselves.
## Classes
### `InvalidTokenError`
### `QueryRangeTooLarge`
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