As wraps [errors.As].

Is wraps [errors.Is].

New creates a new [Error].

Unwrap returns the next error from the error tree.

WithData insiert [Data] into parent is from type [Error].

Wrap wraps an error with another error.

Error is a custom error that carry attributes to specify error's message, resource, layer, code and data.

Data is a custom type to carry error's metadata.