Creates a recoil atom family synced with a relay fragment via its path in a
query. If the fragment path cannot be read from given the parent fragment
keys. Includes the optional sync parameter to conditionally opt-in to
fragment syncing given an atom instance's parameters P.
Creates a recoil atom family synced with a relay fragment via its path in a query. If the fragment path cannot be read from given the parent fragment keys. Includes the optional
syncparameter to conditionally opt-in to fragment syncing given an atom instance's parametersP.