Function parse_reader_audited_surface 

pub fn parse_reader_audited_surface<R>(
    reader: R,
    format: &str,
    cap: usize,
    audit: Option<&mut IriAudit>,
    surface: QuotedTripleSurface,
) -> Result<Vec<(String, String, String, Option<String>)>, IngestError>
where
    R: BufRead,

parse_reader_audited reading << … >> in the given QuotedTripleSurface (Turtle/TriG only — see the enum).