void addImportToCompilationUnit(String classToImport, CompilationUnit compilationUnit) {
if (!isClassImported(classToImport, compilationUnit)) {
AST ast = compilationUnit.getAST();
Name name = createQualifiedName(ast, classToImport);
ImportDeclaration importDeclaration = ast.newImportDeclaration();
importDeclaration.setName(name);
importDeclaration.setOnDemand(false);
importDeclaration.setStatic(false);
compilationUnit.imports().add(importDeclaration);