public function addAlias($parameterName, $prefix = null)
    {
        if ($prefix == null) {
            $this->aliases[$this->prefix] = $parameterName;
        } else {
            $this->aliases[$prefix] = $parameterName;
        }
    }
public function addAlias($parameterName, $prefix = null)
    {
        if ($prefix == null) {
            $this->aliases[$this->prefix] = $parameterName;
        } else {
            $this->aliases[$prefix] = $parameterName;
        }
    }
public function addAlias ( $ parameterName , $ prefix = null ) { if ( $ prefix == null ) { $ this -> aliases [ $ this -> prefix ] = $ parameterName ; } else { $ this -> aliases [ $ prefix ] = $ parameterName ; } }
Add an alias and associate it with a prefix.
If no prefix is defined, the default for
the cluster will be used.

Only one alias can exist per prefix per parameter.

@param string $parameterName
@param string $prefix
Add an alias and associate it with a prefix . If no prefix is defined the default for the cluster will be used .