* element(unresolved1, [], content.size = 0) -> FromUnderlay(documentNode=element(unresolved1, [], content.size = 0))
                * error(UnsupportedSyntax(cause=ElementArgumentFormat)) -> FromUnderlay(documentNode=error(UnsupportedSyntax(cause=ElementArgumentFormat)))
            * element(unresolved3, [], content.size = 0) -> FromUnderlay(documentNode=element(unresolved3, [], content.size = 0))

	// resolve global identifiers within the same file
	i := 0
	for _, ident := range r.unresolved {
		// i <= index for current ident
		assert(ident.Obj == unresolved, "object already resolved")
		ident.Obj = r.pkgScope.Lookup(ident.Name) // also removes unresolved sentinel
		if ident.Obj == nil {
			r.unresolved[i] = ident
			i++
		} else if debugResolve {
			pos := ident.Obj.Decl.(interface{ Pos() token.Pos }).Pos()

                    def unresolved = compile.unresolvedModuleDependencies
                    assert unresolved.size() == 2
                    assert unresolved.find { it.selector.group == 'org.foo' && it.selector.name == 'unknown' && it.selector.version == '1.0' }
                    assert unresolved.find { it.selector.name == 'broken' }
                }
            }
        """

        List<Path> unresolved = dispatched.get(PathType.UNRESOLVED);
        assertEquals(3, dispatched.size());
        assertEquals(1, unresolved.size());
        assertEquals(8, classes.size()); // "plexus.pom" and "junit.jar" are excluded.
        assertEquals(1, modules.size());
        assertEquals("plexus-1.0.11.pom", unresolved.get(0).getFileName().toString());

			}
		}
	}

	// Find unresolved identifiers and uses of top-level declarations.
	depDecls, unresolved := findDeclsAndUnresolved(body, topDecls, typMethods)

	// Remove predeclared identifiers from unresolved list.
	for n := range unresolved {
		if predeclaredTypes[n] || predeclaredConstants[n] || predeclaredFuncs[n] {
			delete(unresolved, n)
		}
	}

        }
    }

    class DummyResolver implements SourceIncludesResolver {
        final Map<String, TestFile> mapping = [:]
        final Set<TestFile> unresolved = []

        void unresolved(TestFile file) {
            unresolved.add(file)
        }

        void resolveAs(String include, TestFile file) {
            mapping[include] = file
        }

        @Override

    }

    private static class MacroSerializer implements Serializer<Macro> {
        private static final byte SIMPLE = (byte) 1;
        private static final byte COMPLEX = (byte) 2;
        private static final byte UNRESOLVED = (byte) 3;
        private final Serializer<IncludeType> enumSerializer;
        private final Serializer<List<Expression>> expressionSerializer;

        "Collection<T> += Provider<T>"           | "+="      | "ListProperty<MyObject>"        | 'provider { MyObject("a") }'                               | unsupportedWithDescription("Unresolved reference. None of the following candidates is applicable because of receiver type mismatch:")

        }

        /*
         * Remembers the unresolved dependency for later logging and also adds a fake
         * file dependency, with the file path pointing to the attempted component selector.
         * This shows up in the IDE as a red flag in the dependencies view. That's not the best
         * usability and it also muddies the API contract, because we disguise an unresolved

        @Override
        public void visitIdentifier(Expression value) {
            results.unresolved();
        }

        @Override
        public void visitTokens(Expression tokens) {
            results.unresolved();
        }

        @Override
        public void visitUnresolved() {
            results.unresolved();
        }
    }