Add the block to the tree and return if the parent block should be fetched, but wasn't desired before.

GetBlockIterator returns a block iterator that will produce values corresponding to persisted blocks in order of increasing height.

GetBlockIteratorWithStart returns a block iterator that will produce values corresponding to persisted blocks in order of increasing height starting at [height].

NewTree creates a new interval tree from the provided database.

Remove the block from the tree.

Tree implements a set of numbers by tracking intervals.