function (config) {
			if (config) {
				if (config.element) {
					this.expect.element(config.element).to.not.be.visible;
				} else {
					throw new Error('adminUIApp:must specify an element!');
				}
			} else {
				throw new Error('adminUIApp:invalid config specification!');
			}
			return this;
		}
function (config) {
			if (config) {
				if (config.element) {
					this.expect.element(config.element).to.not.be.visible;
				} else {
					throw new Error('adminUIApp:must specify an element!');
				}
			} else {
				throw new Error('adminUIApp:invalid config specification!');
			}
			return this;
		}
function ( config ) { if ( config ) { if ( config . element ) { this . expect . element ( config . element ) . to . not . be . visible ; } else { throw new Error ( 'adminUIApp:must specify an element!' ) ; } } else { throw new Error ( 'adminUIApp:invalid config specification!' ) ; } return this ; }
Asserts that the specified home screen element UI is not visible.

@param {Object} config The config spec.
@param {string} config.element The element whose UI should not be visible.
Asserts that the specified home screen element UI is not visible .