Enum Mutation 

pub enum Mutation<'a> {
    Set(&'a str, &'a [u8]),
    Delete(&'a str),
    Pin(&'a str, Oid, FileMode),
}

A mutation to apply to a record’s fields.

Variants

Set(&'a str, &'a [u8])

Upsert a field.

Delete(&'a str)

Delete a field.

Pin(&'a str, Oid, FileMode)

Insert a tree entry pointing at an existing git object with the given file mode.