U2FService function ( ) { if ( u2FService == null ) { synchronized ( U2FService . class ) { if ( u2FService == null ) { u2FService = new U2FService ( ) ; return u2FService ; } else { return u2FService ; } } } else { return u2FService ; } }
gets a u2fservice instance . concode_field_sep U2FService u2FService concode_elem_sep Log log concode_elem_sep U2F u2f concode_elem_sep Map<String,String> requestStorage concode_field_sep ArrayList<String> getDeviceMetadata concode_elem_sep boolean isDeviceRegistered concode_elem_sep RegisterRequestData startRegistration concode_elem_sep void removeAllRegistrations concode_elem_sep void removeRegistration concode_elem_sep void addRegistration concode_elem_sep void finishAuthentication concode_elem_sep AuthenticateRequestData startAuthentication concode_elem_sep Iterable<DeviceRegistration> getRegistrations concode_elem_sep void finishRegistration