Begin building a block by creating the block builder from the transaction graph.
Declared in <txmempool.h>
[[requires_capability(0x7fd7537bb1d8), requires_capability(0x7fd74eec7b68), requires_capability(0x7fd75e7091b8), requires_capability(0x7fd759895988), requires_capability(0x7fd75ce07958), requires_capability(0x7fd759f70de8), requires_capability(0x7fd75b831028), requires_capability(0x7fd73e8af288)]]
void
StartBlockBuilding() const;