Returns a PHG metrics table by given ID
     
    
    Usage
    metricsIds(object, ...)
metricsIds(object, ...) <- value
# S4 method for class 'PHGMetrics'
metricsIds(object, type = NULL)
# S4 method for class 'PHGMetrics'
metricsIds(object) <- value
 
    
    Arguments
- object
- an - rPHG2metrics object
 
- ...
- Additional arguments, for use in specific methods 
- value
- A named vector where name(s) are the old IDs and elements are the new IDs 
- type
- What collection of IDs do you want to return? Defaults to - NULL.