public static String getString ( final Map<MetaKey, String> metadata, final String ns, final String key ) {
    """
	Get a string from meta data
	<p>
	If the provided metadata set is <code>null</code>, then the result will
	also be <code>null</code>.
	</p>
	
	@param metadata
	the meta data map, may be <code>null</code>
	@param ns
	the namespace
	@param key
	the key
	@return the value, as string, may be <code>null</code>
    """
        return getString ( metadata, ns, key, null );
    }
public static String getString ( final Map<MetaKey, String> metadata, final String ns, final String key )
    {
        return getString ( metadata, ns, key, null );
    }
public static String getString ( final Map < MetaKey , String > metadata , final String ns , final String key ) { return getString ( metadata , ns , key , null ) ; }
Get a string from meta data
<p>
If the provided metadata set is <code>null</code>, then the result will
also be <code>null</code>.
</p>

@param metadata
the meta data map, may be <code>null</code>
@param ns
the namespace
@param key
the key
@return the value, as string, may be <code>null</code>
Get a string from meta data <p > If the provided metadata set is <code > null< / code > then the result will also be <code > null< / code > . < / p >