Function write_attribute_with_schema 

fn write_attribute_with_schema(
    writer: &mut TableData,
    prefix: &str,
    key_suffix: &str,
    value: Option<Value>,
    row: &mut Vec<Value>,
    row_index: usize,
    batch_schema: Option<&mut TraceBatchSchema>,
)

Writes one flattened attribute without coercion and optionally records its actual type.