New type returns a fully parsed Type given by the input string or an error if it can't be parsed.

U256 will ensure unsigned 256bit on big nums.

S256 will ensure signed 256bit on big nums.

The ABI holds information about a contract's context and available invokable methods.

Argument holds the name of the argument and the corresponding type.

Callable method given a `Name` and whether the method is a constant.

Type is the reflection of the supported argument type.