Looks up the flags type nicks for the bits specified by value, puts them in an array of strings and writes the array to
key, within this.
It is a programmer error to give a key that isn't contained in the schema for this or is
not marked as a flags type, or for value to contain any bits that are not value for the named type.
After performing the write, accessing key directly with get_strv
will return an array of 'nicks'; one for each bit in value.
| this |
a Settings object |
| key |
a key, within this |
| value |
a flags value |
|
true, if the set succeeds |