@Override
public boolean execute(@NotNull PsiElement element, @NotNull ResolveState state) {
if ( element instanceof GoFunctionDeclaration && ! (element instanceof GoMethodDeclaration) ) {
GoFunctionDeclaration function = (GoFunctionDeclaration) element;
String functionName = function.getFunctionName();
if ( GoNamesUtil.isExported(functionName) ) {
nodeFunctions.add(function);
}