ClassNameManager Class
A singleton class providing:
- Easy creation of prefixed class names
- Caching of previously created class names for improved performance.
Methods
getClassName
    
        
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                        skipPrefix
Returns a class name prefixed with the the value of the 
Y.config.classNamePrefix attribute + the provided strings.
Uses the Y.config.classNameDelimiter attribute to delimit the 
provided strings. E.g. Y.ClassNameManager.getClassName('foo','bar'); // yui-foo-bar
