Converts an object representing a set of name/value pairs into a query string,
with names and values encoded properly for use in a URL.  Values that are arrays
will produce multiple values with the same name.
    
    
    
    
    
    
        
| Name | Type | Description | 
|---|---|---|
| obj | Object | The object containing data to encode. | 
Returns:
    An encoded query string.
        
    
    
- queryToObject // str will be: // 'key1=some%20value&key2=a%2Fb&key3=x&key3=y'
Example:
var str = Cesium.objectToQuery({
    key1 : 'some value',
    key2 : 'a/b',
    key3 : ['x', 'y']
});