class LinkInto

Creates a link to this this object with name `dst` in the directory represented by

`dst_parent_token`.

`dst` must be a resolved object name. Including "/" in the string will return

`ZX_ERR_INVALID_ARGS`.

This method requires the maximal set of rights supported by the filesystem for this object.

For files this would typically be [`Rights.READ_BYTES`], [`Rights.WRITE_BYTES`],

[`Rights.GET_ATTRIBUTES`] and [`Rights.UPDATE_ATTRIBUTES`]. Some filesystems might also

support the [`Rights.EXECUTE`] right. Insufficient rights will result in

`ZX_ERR_ACCESS_DENIED`.

If this object has no links and is *NOT* an unnamed temporary object (objects opened with

`Flags.FLAG_CREATE_AS_UNNAMED_TEMPORARY`), it will fail with `ZX_ERR_NOT_FOUND`.

For unnamed temporary objects, use LinkInto to give it a name. Upon successful completion,

the object will be permanently linked to the filesystem. Requires that the unnamed temporary

object is linkable, if not, it will fail with `ZX_ERR_NOT_FOUND`.

This method does not have the same atomicity properties has the `Directory::Link` method,

which means that calling `Open` then `LinkInto` is not equivalent to `Directory::Link`

because `LinkInto` will not prevent the source from being renamed or unlinked.