nl_tokens: Retrieves a Cognito ID loading from cache if it was already retrieved on this device .
pl_tokens: function getId ( callback ) { var self = this ; if ( typeof self . params . IdentityId === 'string' ) return callback ( ) ; self . cognito . getId ( function ( err , data ) { if ( ! err && <mask> . IdentityId ) { self . params . IdentityId = data . IdentityId ; } callback ( err , data ) ; } ) ; }