Resets the state of the block builder. <div class="warning"> This method **must** be called before giving [`self`](ExecutedBlockBuilder) an event de

Exposes the underlying c-types.

Capacity of memory buffer returned by `alloc()` and `alloc_ref()`.

Allocate zero initialized memory buffer of `alloc_capacity()` size. The entire memory buffer must be zeroed before the `Ref` object is destroyed.

No discharge

YP Sec 7: Eq 87, top

//////////////////////////////////////////////// Create a new trie from a list of updates, no incarnation ////////////////////////////////////////////

ensures enc.empty() if successful

Byte encode 64 bit integers in 256 bit big endian format.

low level getter returning packed epochs for delta epoch and next delta epoch. prefer the helpers for getting those values individually.

* Returns `true` if `opcode` belongs to the `PUSHN` family of EVM opcodes. */