Number of fields in this record. Respects STX/ETX nesting.
All fields as slices.
Raw bytes of the entire record.
All logical field values.
Access field by index. Respects STX/ETX nesting.
Field n as a flat list: the items of its STX/ETX scope split on
top-level US, each DLE-unescaped (mirrors value). Inverse of
Builder#listField. A field that is not an STX/ETX scope is returned
as a single-item list holding its value; an empty scope is an empty list.
Logical bytes of field n: the raw slice with DLE escapes decoded. Zero-copy when the field contains no escapes.
Zero-copy accessor for a single record within a table. Fields are accessed by index, returning slices into the original buffer.