Object targetNode = null; // node referenced from current hover point
Object helpNode = null; // node for which a help message is to be constructed
String msg = null; // the help message for helpNode
// Get the node at the given offset; no node implies no message
ISourcePositionLocator nodeLocator = parseController
.getSourcePositionLocator();
sourceNode = nodeLocator.findNode(ast, offset);
if (sourceNode == null) {
return null;
}
// Check whether there is a reference resolver for the identified