code: func (tmp *TieredMergePolicy) SetReclaimDeletesWeight(v float64) *TieredMergePolicy {
  	assert2(v >= 0, fmt.Sprintf("reclaimDeletesWeight must be >= 0 (got %v)", v))
  	tmp.reclaimDeletesWeight = v
  	return tmp
  }
docs: /*
  Controls how aggressively merges that reclaim more deletions are
  favored. Higher values will more aggresively target merges that
  reclaim deletions, but be careful not to go so high that way too much
  merging takes place; a value of 3.0 is probably nearly too high. A
  value of 0.0 means deletions don't impact merge selection.
  */