Construct a block builder, drawing chunks in order, from the main graph, which cannot be oversized. While the returned object exists, no mutators on the main graph are allowed. The BlockBuilder object must not outlive the TxGraph it was created with.
Declared in <txgraph.h>
virtual
std::unique_ptr<BlockBuilder>
GetBlockBuilder() noexcept = 0;A block builder that draws chunks from the main graph in order.