pub fn memory_read_watermark(
memory_db_path: &Path,
policy: &MemoryReadPolicy,
limit: usize,
events: &[MemoryEvent],
) -> Result<MemoryReadWatermark>pub fn memory_read_watermark(
memory_db_path: &Path,
policy: &MemoryReadPolicy,
limit: usize,
events: &[MemoryEvent],
) -> Result<MemoryReadWatermark>