dist/lib/page_objects/page_elements/ValuePageElementGroup.js
function isIValueElementNode(node) {
    return typeof node['getValue'] === 'function' &&
        typeof node['setValue'] === 'function' &&
        typeof node.currently['getValue'] === 'function' &&
        typeof node.currently['hasValue'] === 'function' &&
        typeof node.currently['hasAnyValue'] === 'function' &&
        typeof node.currently['containsValue'] === 'function' &&
        typeof node.wait['hasValue'] === 'function' &&
        typeof node.wait['hasAnyValue'] === 'function' &&
        typeof node.wait['containsValue'] === 'function' &&
        typeof node.eventually['hasValue'] === 'function' &&
        typeof node.eventually['hasAnyValue'] === 'function' &&
        typeof node.eventually['containsValue'] === 'function';
}
function isIValueElementNode(node) {
    return typeof node['getValue'] === 'function' &&
        typeof node['setValue'] === 'function' &&
        typeof node.currently['getValue'] === 'function' &&
        typeof node.currently['hasValue'] === 'function' &&
        typeof node.currently['hasAnyValue'] === 'function' &&
        typeof node.currently['containsValue'] === 'function' &&
        typeof node.wait['hasValue'] === 'function' &&
        typeof node.wait['hasAnyValue'] === 'function' &&
        typeof node.wait['containsValue'] === 'function' &&
        typeof node.eventually['hasValue'] === 'function' &&
        typeof node.eventually['hasAnyValue'] === 'function' &&
        typeof node.eventually['containsValue'] === 'function';
}
function isIValueElementNode ( node ) { return typeof node [ 'getValue' ] === 'function' && typeof node [ 'setValue' ] === 'function' && typeof node . currently [ 'getValue' ] === 'function' && typeof node . currently [ 'hasValue' ] === 'function' && typeof node . currently [ 'hasAnyValue' ] === 'function' && typeof node . currently [ 'containsValue' ] === 'function' && typeof node . wait [ 'hasValue' ] === 'function' && typeof node . wait [ 'hasAnyValue' ] === 'function' && typeof node . wait [ 'containsValue' ] === 'function' && typeof node . eventually [ 'hasValue' ] === 'function' && typeof node . eventually [ 'hasAnyValue' ] === 'function' && typeof node . eventually [ 'containsValue' ] === 'function' ; }
type guards 
Returns true if the passed node supports all functions defined in IValueElementNode.

@param node a PageNode
type guards Returns true if the passed node supports all functions defined in IValueElementNode .