classFieldHasAssignment function
Implementation
bool classFieldHasAssignment(ClassElement clazz, FieldElement field) {
var session = field.session!;
ParsedLibraryResult parsedLibResult =
session.getParsedLibraryByElement(clazz.library) as ParsedLibraryResult;
FragmentDeclarationResult declaration = parsedLibResult
.getFragmentDeclaration(field.firstFragment)!;
return declaration.node.toSource().split("=").length > 1;
}