
Test:
+--------------------------+------------+
| Name                     |         ID |
+--------------------------+------------+
| ether_unit()             | 0x95af8066 |
| time_unit()              | 0x030dd91c |
| block_and_transactions() | 0x4d88f0e0 |
| abi_encode()             | 0x36f66b46 |
| error_handling()         | 0x8bae1bea |
| math_and_crypto()        | 0xbe48073f |
| address_related()        | 0x81ec0bbe |
| contract_related()       | 0xdf1e2a6b |
+--------------------------+------------+

