Returns the string with the name of the connected node. The input must be: (i) a source component node, or (ii) a user-defined function of type "inline" that is directly connected to a parameter, which in turn is directly connected to a node in the calling mapping.
The connection must be direct. It cannot pass through a filter or a non-inlined user-defined function. This is a pseudo-function, which is replaced at generation time with the text acquired from the connected node, and is therefore available for all languages.