pub fn extract_header_inner_from_meta<'a>(
meta: &'a SourceMeta,
inner_field: &str,
data_type: Option<&DataType>,
) -> Option<DatumCow<'a>>
pub fn extract_header_inner_from_meta<'a>(
meta: &'a SourceMeta,
inner_field: &str,
data_type: Option<&DataType>,
) -> Option<DatumCow<'a>>