func (c *changedFilesAgent) prune() {
	c.Lock()
	defer c.Unlock()
	c.changeCache = c.nextChangeCache
	c.nextChangeCache = make(map[changeCacheKey][]string)
}
func (c *changedFilesAgent) prune() {
	c.Lock()
	defer c.Unlock()
	c.changeCache = c.nextChangeCache
	c.nextChangeCache = make(map[changeCacheKey][]string)
}
func ( c * changedFilesAgent ) prune ( ) { c . Lock ( ) defer c . Unlock ( ) c . changeCache = c . nextChangeCache c . nextChangeCache = make ( map [ changeCacheKey ] [ ] string ) }
// prune removes any cached file changes that were not used since the last prune.
prune removes any cached file changes that were not used since the last prune .